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RandstadRail

RandstadRail is a system in the western that integrates and services to connect the cities of , , and , primarily utilizing former heavy rail lines, existing tram tracks, and dedicated new infrastructure for efficient regional travel. The network emerged from a long-planned initiative to link the transport systems of and , serving the densely populated region, which houses nearly half of the population. It consists of two main corridors: a 36 km northern route from to and a 32 km Hofpleinlijn route linking to , with services extending into urban centers via street-running trams. Operations began in October 2006, following years of planning and construction that addressed technical challenges such as dual-voltage (750 V DC and 600 V DC) and mixed-height platforms to accommodate both low-floor trams and high-floor metros. RandstadRail is jointly operated by two regional transport authorities: HTM Personenvervoer, which manages the tram services from The Hague to Zoetermeer using 50 Alstom Citadis low-floor vehicles capable of speeds up to 80 km/h and carrying 220 passengers each, and RET (Rotterdam Elektrische Tram), which runs Metro Line E from The Hague Central to Slinge in Rotterdam with 21 Bombardier Flexity Swift trains. Key infrastructure includes viaducts at Netkous and The Hague Central, a 2.4 km bored tunnel completed in 2008 to integrate with Rotterdam's metro, and modernized stations designed for accessibility, including spaces for wheelchairs and bicycles (allowed free after 7 p.m. on weekdays and all day on weekends). The system supports high-frequency services during peak hours, enhancing connectivity for commuters across the conurbation while promoting sustainable urban mobility through low-floor, accessible vehicles equipped with onboard ticket machines and wide doors. Despite initial operational disruptions in 2007 due to technical complexities from integrating diverse vehicle types and infrastructure, RandstadRail has since stabilized as a vital link, with extensions like the full Rotterdam integration completed in 2011.

History

Origins and planning

In the 1990s, the Hofpleinlijn and Zoetermeer Stadslijn, operated by (), experienced declining viability due to low average speeds resulting from frequent stops and underutilization, with daily ridership figures of approximately 7,000 passengers on the Hofpleinlijn and 17,000 on the Zoetermeer Stadslijn—numbers well below the lines' capacity despite serving growing suburban areas. These heavy rail lines, originally built in the early 20th century and 1970s respectively, struggled to meet the demands of urban expansion under the Dutch VINEX policy, which aimed to develop new housing in the conurbation but highlighted the need for more efficient regional connectivity between , , and . In response, late 1990s decisions by regional transport authorities focused on transforming these underused rail corridors into a high-frequency and hybrid system to better integrate with urban networks, reduce congestion, and support in the densely populated area. The initiative gained momentum in 1995 when public transport operators RET, , ZWN (later ), and jointly published the report RandstadRail, de file voorbij, proposing the conversion of the lines to enhance and frequency while leveraging existing for cost-effective regional transit. Key planning milestones included a 2001 between HTM, RET, and provincial governments of and , culminating in planning approval on October 3, 2001, after incorporating public feedback and modifications; environmental impact assessments (Plan-MER) were conducted, particularly for the Hofpleinlijn as a pilot, evaluating effects on noise, vibration, and urban integration. was secured through and regional allocations totaling over €800 million, primarily from the , to support the shift from heavy rail to a operation for improved efficiency and seamless urban-street integration using mixed high- and low-floor vehicle designs. This conceptual pivot emphasized cost savings by avoiding full heavy rail upgrades while enabling higher service frequencies and better alignment with standards in city centers.

Construction and initial opening

Construction of RandstadRail began in 2002 following the establishment of the Projectorganisatie RandstadRail on October 18 of that year, with major infrastructure work spanning from 2003 to 2006 as part of the government's Meerjarenprogramma Infrastructuur en . The project involved rebuilding approximately 36 km of existing tracks, primarily the former Netherlands Railways () lines known as the Hofpleinlijn (about 21 km) and Zoetermeerlijn (16.7 km), to standards, including the replacement of 45,000 sleepers due to poor condition identified in 2005. Station reconstructions were carried out across the network, with new halts added at locations such as Pijnacker-Zuid, , Leidschenveen, and Forepark, while platforms were lowered to 30 cm height over 70 m lengths to accommodate low-floor vehicles. A critical phase was the 13-week conversion period from June 3 to September 3, 2006, after ceased operations on the lines, during which tracks, switches, and power systems were fully adapted, replacing the original 1,500 V DC with 750 V DC overhead electrification across the shared sections from Den Haag Centraal to and Hofplein. For Line E integration with the , tunnel boring and underground connections were constructed, enabling seamless metro-tram operations. Technical challenges included late scope changes, such as switch replacements with tram-compatible wheels in June 2004 and block security system awards in September 2004, alongside coordination issues among contractors like and . Urban disruptions were significant, particularly in and , where construction interfered with daily life, necessitating temporary bus replacements for affected routes and extending the test-and-trial phase (OTP) beyond its initial schedule due to unresolved safety and technical issues. Level crossings posed safety risks, addressed through new underpasses, flyovers (e.g., at Schenkstrook), and innovative elements like klapwissels and movable point pieces to handle mixed RET metro and HTM tram traffic, guided by the Normdocument Veiligheid Lightrail (version 5.0, November 25, 2002). These efforts delayed the planned July 1, 2006, launch, with the project costing additional credits for track renewals allocated in August 2005. The initial opening occurred on October 29, 2006, for Lines 3 and 4 (Den Haag to ), marking the debut of RegioCitadis low-floor trams (awarded to on April 16, 2004), while partial Line E service (RET) began on November 12, 2006, using Flexity Swift high-floor metros. The core network spanned about 48 km with 52 stations, connecting , , and . First passenger services saw initial daily ridership around 50,000 in 2007, building on pre-conversion figures of approximately 140,000 weekly passengers across the former lines. Service faced early interruptions from derailments on November 3 and 29, 2006, at sites like Ternoot and Forepark, leading to suspensions until full operations resumed in October 2007.

Expansions and upgrades

Following the initial opening of the RandstadRail network in , which established core connections between , , and , subsequent expansions focused on completing key lines and extending reach to underserved areas. In October 2007, Line 3 achieved full operational status with the resumption of services between Den Haag Centraal and Zoetermeer Seghwaert on October 20, marking the restoration of the route after early technical challenges and enabling bidirectional tram-train operations across the full length. This completion integrated the former Hofpleinlijn more seamlessly into the regional system, boosting connectivity for commuters in the Haaglanden area. A significant milestone came in December 2011 with the extension of Line E to Slinge station, allowing through-running from Den Haag Centraal via Rotterdam Centraal to the southern terminus. This upgrade, operational from , incorporated existing metro infrastructure and added approximately 6 km of effective route length for RandstadRail services, including a new park-and-ride facility at Slinge to support intermodal travel. The extension enhanced integration between HTM-operated trams and RET metro lines, reducing transfer times and increasing capacity during peak hours. Further growth occurred in 2019 with the opening of the 2.4 km Oosterheem branch, extending Line 4 from Javalaan to the new Lansingerland- interchange station on May 19. This addition created a vital hub linking RandstadRail with heavy rail and local buses along the A12 motorway, serving growing residential developments in Lansingerland and improving access for over 50,000 residents. The branch features low-floor platforms and direct highway connections, exemplifying efforts to expand the network's suburban footprint. In 2020, Line 34 was introduced as a peak-hour short-turn service from De Savornin Lohmanplein to , combining elements of Lines 3 and 4 to optimize capacity on the western segments. This weekday-only route, launched amid evolving demand patterns, provides an additional 31 stops and enhances frequency for commuters avoiding full-line travel to or . Upgrades have complemented these expansions, including the addition of ZoRo bus routes in December 2012, which integrated high-speed bus lines and 171 into the RandstadRail network along a dedicated 7 km busway from Centrum-West to . These services, operating at up to 70 km/h with priority signaling, bridge gaps to without full rail conversion, carrying thousands of passengers daily and supporting the system's hybrid light rail-bus model. Infrastructure enhancements addressed mixed-fleet compatibility, with platform height adjustments implemented progressively from 2008 to 2015 at key interchanges like Laan van NOI, accommodating both 30 cm low-floor trams on lines and 90-100 cm metro-compatible platforms on the Erasmuslijn segment. These twin-height designs, combined with 750 V overhead , enabled seamless dual-voltage operations and improved for wheelchair users. The led to temporary service reductions across Dutch , including RandstadRail, with check-ins dropping up to 90% in 2020 compared to 2019 levels due to lockdowns and shifts. Frequencies were scaled back on Lines 3, 4, and E from March 2020 through 2022, prioritizing essential travel while maintaining hygiene protocols like mandatory masking. By , ridership had recovered to near pre-pandemic volumes, aided by resumed full schedules and promotional campaigns to rebuild commuter confidence. Recent minor retrofits from 2023 to 2025 have focused on at select stations, including and audio announcements at approximately 10 sites along Lines 3 and 4, aligning with national standards for . These updates, part of ongoing maintenance, ensure compliance with accessibility directives without major disruptions to service.

Operators and organization

HTM operations

HTM Personenvervoer NV, a public transport company based in , has provided mobility services in the region since introducing the Netherlands' first horse-drawn line in 1864, with the company formally established in 1887. Since 2006, has been responsible for operating RandstadRail lines 3, 4, and 34, which connect with and integrate with the broader network to enhance regional connectivity. These services utilize dedicated infrastructure while sharing tracks with local operations. HTM manages the daily operations of these lines, including scheduling, passenger services, and fleet maintenance for over 70 RegioCitadis low-floor vehicles, which are designed for both urban tram and higher-speed segments. The vehicles, delivered by between 2006 and 2011, feature enclosed cabs for operation at speeds up to 80 km/h and are maintained primarily at the Meppelweg depot in , with additional support facilities in the region. In 2024, HTM announced a for up to 150 new Stadler low-floor trams to replace older vehicles, with deliveries starting in 2028. HTM staff undergo specialized training to handle the dual-mode requirements, ensuring safe transitions between street-level tram running and dedicated rail corridors. These lines represent approximately 40 km of the RandstadRail network, focusing on the segments through , Leidschendam-Voorburg, and . HTM integrates RandstadRail vehicles seamlessly with its local services on lines 2 and 19, where the white-and-blue liveried RegioCitadis trams alternate with standard trams to provide consistent in central . In 2024, HTM's rail operations, encompassing RandstadRail and local trams, received €183.5 million in contributions from the Metropoolregio Rotterdam Den Haag (MRDH) to support ongoing operations and infrastructure upkeep.

RET operations

The Rotterdamse Elektrische Tram (RET), a Rotterdam-based established in 1905, is responsible for managing metro services in the region, including its integration into the broader RandstadRail network. RET oversees Line E, which connects Centraal to Slinge in and has been part of the system since its incorporation into RandstadRail in 2006. This line represents a key segment of RET's operations, emphasizing the company's expertise in metro infrastructure and regional connectivity. RET's operational control for Line E is handled from its Central Traffic Control center in , where real-time monitoring, scheduling, and safety oversight ensure efficient service across the network. The line features 23 stations, with RET managing the Rotterdam portion that utilizes high-floor platforms compatible with standards. Trains on Line E employ signaling systems for safe and reliable operation, particularly on the elevated and underground sections within . During peak hours, services run at headways of 5-7 minutes to accommodate high demand between and . Maintenance for Line E's fleet, consisting of high-floor Bombardier vehicles, is conducted at RET's 's-Gravenweg depot in , where routine inspections, repairs, and overhauls support the reliability of these light metro trains. In 2025, RET initiated a for 38 new metro trains to modernize the fleet, with the first units scheduled to enter service in 2030, enhancing capacity and comfort on lines including E. These upgrades align with RET's focus on sustainable and efficient metro operations within the RandstadRail framework.

Integration and governance

RandstadRail's joint operations stem from a concession awarded in 2004 by Stadsgewest Haaglanden and Stadsregio Rotterdam, the regional authorities preceding the MRDH, in collaboration with the Ministry of Transport, enabling coordinated infrastructure development and service integration between and areas. Since its launch in 2006, the network has employed unified branding and integrated scheduling to facilitate seamless travel across lines operated by and RET, with services running every 5-15 minutes during peak hours, varying by line. This collaboration builds on the distinct roles of in 's tram and light rail services and RET in 's metro extensions. The ticketing system integrates the national across both operators, permitting check-in and check-out with a single card for uninterrupted journeys on RandstadRail routes. Single fare zones cover most trips, with costs ranging from €3 to €6 per journey in , depending on distance and zones. These fares are subsidized by the national government, which provides substantial funding—approximately €475 million annually to the MRDH for regional —to maintain affordability and service quality. Governance of RandstadRail falls under the Metropoolregio Rotterdam Den Haag (MRDH), established as the coordinating authority in 2015 to oversee 23 municipalities and harmonize transport policies across the region. The MRDH issues annual joint performance reports, such as the OV Monitor, evaluating metrics like ridership, , and infrastructure utilization for integrated networks including RandstadRail. To manage operational challenges, the MRDH employs mechanisms, including mediation processes, for issues like cross-operator delays arising from shared .

Infrastructure

Tracks and electrification

The RandstadRail network comprises approximately 68 kilometers of track, utilizing the standard gauge of 1,435 mm throughout its routes connecting , , and . The infrastructure features a combination of dedicated light rail alignments, street-running sections in urban centers like , and shared segments with existing metro systems, including underground tunnels such as the 1.3-kilometer tram tunnel in central and the 2.4-kilometer twin-bore Statenweg tunnel linking to 's metro network. Electrification is provided at 750 V on main routes and 600 V on urban tram lines within , primarily via overhead lines for the sections operated by and RET, enabling compatibility with urban networks. For Line E, which integrates with the , power is supplied through a third-rail system in the Rotterdam sections, transitioning to overhead lines in areas, with the overall network supported by an independent power supply system including dedicated substations. Approximately 40% of consists of grade-separated sections, such as viaducts and tunnels, which permit higher operating speeds of up to 100 km/h on interurban segments to enhance efficiency and safety. The remaining at-grade portions include street-level running and several level crossings equipped with automatic barriers to manage interactions with road traffic.

Stations and accessibility

RandstadRail operates across 73 stops in total, comprising 23 stations on Line E and 50 on the associated tram lines, facilitating connections between , , and . Key interchanges occur at major hubs such as Den Haag Centraal, Rotterdam Centraal, and Zoetermeer Centrum-West, enabling seamless transfers to services and local . The network emphasizes passenger , with low-floor platforms available at many stops to support users, rollator operators, and those with prams. Elevators and ramps have been added at principal stations as part of accessibility upgrades. Challenges arising from mixed high- and low-floor vehicles are addressed through twin-height platforms and gap fillers at shared sections, ensuring level boarding where possible. Real-time departure displays are installed at stops, integrated with mobile apps for live tracking.

Lines

Line E

Line E is the metro component of the RandstadRail network, providing a direct rapid transit connection between Den Haag Centraal in and Rotterdam Slinge in . Spanning 27 km, the line serves 23 stations and takes about 38 minutes end-to-end. The route runs southeast from Den Haag Centraal, passing through suburban areas including Voorburg, Leidschendam, , and , before entering via the Blijdorp tunnel and continuing along the Erasmuslijn to its terminus at Slinge. Key intermediate stops include , a major interchange hub for , other lines (A, B, C, and D), and regional buses. The full list of stations in sequence from north to south is: Den Haag Centraal, Laan van NOI, Voorburg 't Loo, Leidschendam-Voorburg, Forepark, Leidschenveen, , Pijnacker Centrum, Pijnacker Zuid, Berkel Westpolder, Rodenrijs, Meijersplein (near ), Melanchthonweg, Blijdorp, Rotterdam Centraal, Stadhuis, Beurs, Leuvehaven, Wilhelminaplein, Rijnhaven, Maashaven, Zuidplein, and Slinge. This alignment facilitates seamless transfers at Rotterdam Centraal to the broader network, enhancing connectivity across the region. The line's infrastructure includes a mix of surface tracks in suburban sections and underground tunnels in urban , powered by overhead lines up to Melanchthonweg and third-rail electrification thereafter. Operated by Rotterdam Elektrische Tram (RET), Line E runs with high frequency to meet commuter demand: every 10 minutes during peak hours and up to every 5 minutes during rush periods, with reduced service (every 15-30 minutes) in off-peak times. Services operate from around 5:50 AM to 1:00 AM on weekdays, extending later on weekends. The line uses high-floor light metro vehicles manufactured by Bombardier (now ), which are compatible with the Rotterdam Metro's gauge and power systems. Line E opened on 10 September 2006, initially connecting Den Haag Centraal to Centraal via the existing Erasmuslijn infrastructure adapted for RandstadRail operations. It was extended southward to Slinge on 18 December 2011, following the completion of the Blijdorp tunnel link, which allowed through-running with Line D services. As the primary link in the RandstadRail system, Line E carries the highest ridership among its routes, with approximately 100,000 daily passengers as of 2025, underscoring its role in regional commuting between and .

Line 3

Line 3 of RandstadRail is a tram-train service that operates over a 33.4 km route from Den Haag Loosduinen in the western part of to Centrum-West, traversing the city center and suburban areas in between. The line includes 41 stations, providing connections through key locations such as Den Haag Centraal, Grote Markt, Spui, and Voorburg 't Loo, before reaching residential neighborhoods in . The full journey takes approximately 50 minutes, achieving an average speed of about 40 km/h due to a mix of urban and dedicated track sections. Operated by HTM Personenvervoer, Line 3 features street-running segments in central , where it shares tracks with local trams, transitioning to dedicated rights-of-way outside the city for higher speeds and reliability. During daytime hours, services run every 7 to 10 minutes, ensuring frequent access for commuters traveling between the urban core and outer suburbs. The line opened on February 12, 2007, as part of the broader RandstadRail network expansion to enhance regional connectivity. Line 3 primarily serves residential districts, including areas like Madestein in southwestern , facilitating daily travel for locals to employment centers and districts in the core. At its endpoints, the service integrates with local bus networks; in Den Haag Loosduinen, connections to buses support further westward travel, while in Centrum-West, links to regional buses extend access to surrounding communities. This setup promotes seamless multimodal journeys within the region. Plans are in place to increase peak frequencies to every 5 minutes as of 2024 discussions.

Line 4

Line 4 of RandstadRail operates as a vital service connecting the university campus at Den Haag De Uithof to Lansingerland-, passing through key areas including Centrum-West and Den Haag Centraal. The route spans urban and suburban landscapes, facilitating seamless transfers at major hubs like Den Haag Centraal for regional rail connections. It primarily serves academic, residential, and employment zones, with a strong emphasis on accommodating student commuters from the campus at De Uithof and daily workers traveling to . The line commenced operations on October 29, 2006, as part of the initial phase of the RandstadRail network, integrating former railway infrastructure with new tram tracks to enhance connectivity between and . In May 2019, the route was extended by approximately 2 km from its previous terminus at Javalaan to Lansingerland-Zoetermeer, adding interchanges with services and supporting growth in nearby housing developments. This extension improved access to emerging residential areas and bolstered the line's role in regional mobility. The full journey covers numerous stations, including De Uithof, Zuiderpark, Leyenburg, Voorburg 't Loo, Leidschendam-Voorburg, and various stops, with a typical end-to-end travel time of about 34 minutes. Service on Line 4 runs with low-floor RegioCitadis tram-trains, ensuring accessibility for passengers with mobility aids and bicycles. During peak daytime hours from approximately 06:47 to 21:52, trains depart every 10 minutes in both directions, with frequencies of every 9-15 minutes during operating hours to match commuter demand. This high-frequency operation underscores the line's importance for student traffic to and from the university , as well as broader commuter flows toward Zoetermeer's districts, contributing to reduced reliance on private vehicles in the densely populated region. Plans are in place to increase peak frequencies to every 5 minutes as of discussions.

Line 34

Line 34 is a supplementary line within the RandstadRail network, operated by Personenvervoer using low-floor RegioCitadis tram-trains, designed to enhance flexibility and capacity on the corridor between and . The route spans 20 km from Den Haag De Savornin Lohmanplein in the Loosduinen district to Lansingerland-, serving 31 stations and taking approximately 30 minutes end-to-end. It shares tracks with Line 4 for much of its length but operates a truncated span, focusing on high-density residential and commercial areas including Ypenburg, , and Leidschenveen to support local commuting. Introduced in 2020, Line 34 provides service every 15 minutes during off-peak periods, with increased frequency during rush hours, primarily to relieve capacity pressures on the longer Line 4 route. This addition has improved network efficiency and passenger demand in the region.

Rolling stock

Metro vehicles for Line E

Line E of RandstadRail utilizes high-floor metro trains, with 22 dedicated RSG3 (series 5500) units built in 2007–2009 specifically for the line between and , supplemented by SG3 (series 5600) units from the broader RET fleet. These vehicles operate in a three-car articulated configuration, measuring approximately 42.7 meters in length, with a passenger capacity of 220, including standing room. Designed for efficient urban and regional service, they achieve a top speed of 80 km/h, enabling reliable performance on the electrified third-rail infrastructure. The trains feature full air-conditioning for passenger comfort across all cars, a design at 960 mm above the rail to ensure compatibility with existing platforms, and onboard validation machines for contactless ticketing. Accessibility is prioritized with dedicated multi-purpose areas in each car for wheelchairs and prams, alongside low-threshold doors and seven double doors per side for swift boarding. These elements contribute to the vehicles' role in providing seamless, inclusive service on the high-speed route. Maintenance of the fleet is handled by RET at their dedicated facilities in , with periodic overhauls conducted to sustain operational reliability. In 2025, RET launched a for 38 new trains valued at €578 million, with 9 units earmarked to augment on Line E by reducing headways; these future vehicles will incorporate enhanced measures and are slated for delivery between 2029 and 2030.

Tram-train vehicles for Lines 3, 4, and 34

The vehicles used on RandstadRail lines 3, 4, and 34 are RegioCitadis low-floor units, introduced in 2006 to support the network's operations between and . operates a fleet of 72 such vehicles (initial order of 50 plus 22 additional units delivered by 2011), which are also deployed on select city tram routes but form the core for these RandstadRail services. These vehicles feature a three-car articulated , measuring approximately 37 in length and providing a capacity of up to 220 passengers, including standing room, to accommodate peak suburban demand. They achieve a maximum speed of 80 km/h on dedicated tracks, enabling efficient travel times across the mixed urban and interurban segments of the lines. The RegioCitadis units incorporate air-conditioning and bidirectional cabs at both ends, allowing flexible operation without turning facilities at terminals. Key accessibility and safety features include a low-floor configuration over 75% of the interior length with a floor height of 420 mm, facilitating level boarding at adjusted platforms, and five wide doors per side for rapid flow. A fully enclosed, separated driver cab enhances safety by isolating the area from the compartment, while dedicated spaces accommodate up to two bicycles or wheelchairs per . The trams sport a distinctive white-and-blue RandstadRail , promoting visibility across the network. Maintenance for the fleet is handled at HTM's dedicated depot in , ensuring regular servicing to support reliable operations on the tram-train routes, with ongoing upgrades as part of fleet modernization efforts as of 2025.

Complementary services

ZoRo buses

The ZoRo buses provide express bus services connecting to , serving as a key complement to the RandstadRail network by bridging gaps in direct rail links. Operated by Rotterdam Elektrische Tram (RET) since December 9, 2012, the services include line 170 from Zoetermeer Centrum West to Rodenrijs Metro station and line 173 from Station Lansingerland-Zoetermeer to Rodenrijs Metro, with both lines utilizing dedicated bus lanes over their routes to enhance speed and reliability. From Rodenrijs, riders transfer to metro line E for continued travel to Centraal or Slinge, enabling end-to-end journeys integrated within the regional system. These buses were established under the ZoRo project, promoting regional connectivity in by reducing reliance on congested roads and offering fares integrated via the for seamless transfers from RandstadRail lines. Operations feature peak-hour frequencies of every 10 to 15 minutes, with a typical travel time of 35 minutes from to Centraal. RET introduced electric buses across its fleet starting in 2019, reaching nearly 100 zero-emission vehicles by 2023 to support sustainable mobility goals. As of 2025, studies are ongoing for potential upgrades to further improve the ZoRo connection.

Associated tram lines

HTM operates two conventional urban tram lines, numbered 2 and 19, that are associated with RandstadRail through shared use of its vehicles and branding, facilitating integrated in region. Line 2 functions as a loop serving the Kijkduin area, while line 19 connects Den Haag HS to Vrederust; both cover urban routes spanning 10-15 . These lines have utilized RegioCitadis trams—the same low-floor, three-section vehicles employed on RandstadRail's lines 3, 4, and 34—since 2013, with approximately 20 vehicles allocated across the shared fleet for urban operations. Services on lines 2 and 19 run every 10 minutes during peak periods, operating fully on street-running tracks without dedicated infrastructure, and primarily serve as feeder connections to RandstadRail interchanges like Den Haag Centraal and Spui for enhanced passenger transfers. The white-blue RandstadRail livery on these trams promotes visual and operational continuity, supporting seamless travel between local urban segments and the broader regional network. From 2026, plans to introduce new trams, which may replace older vehicles on these lines.

Ridership and future developments

Usage statistics

The RandstadRail network reached a peak daily ridership of 125,000 passengers in 2018, reflecting strong pre-pandemic demand across its integrated and metro services. This figure encompassed contributions from all lines, with Line E (operated by RET) handling a significant portion of interurban travel between and . The caused a sharp decline, reducing daily passengers to approximately 80,000 in 2020, as restrictions and patterns curtailed and leisure trips; reported rail ridership dropping to as low as 18% of 2019 levels early in the year, while RET saw a near-halving of total passengers to 95 million annually. By 2024, ridership had recovered to around 110,000 daily passengers, representing about 88% of pre-pandemic levels and driven by the return of office-based work and . Line E continued to account for roughly 55% of total usage, with total RET passengers reaching 162 million annually (including , , and bus), up from 156 million in 2023; ridership was 100.7 million annually as of 2024. HTM's total rail services, including Lines 3, 4, and 34, contributed 84 million passengers in 2024, achieving 97% of 2019 volumes. This recovery translated to approximately 40 million annual boardings across the network. Pre-2020 trends showed steady annual growth of about 3% in ridership, supported by population increases in the Rotterdam-The Hague-Zoetermeer corridor and improved service frequencies. The network's within the broader region rose to 15% of all trips, bolstered by seamless integration with and bus services, which helped shift commuters from private vehicles. Peak-hour loads on Line 4 occasionally reached 200% of capacity, highlighting congestion on the shared segments between and , particularly during morning and evening rushes. On-time performance averaged 92% in 2024, with RET metro availability exceeding 99% quarterly, though rail faced occasional pressures from maintenance and traffic interfaces. Environmentally, RandstadRail contributed to sustainability by reducing daily car trips by an estimated 20,000 in the metropolitan area, as light rail and metro options displaced short-haul automobile use and lowered CO2 emissions compared to road travel; this modal shift aligned with regional goals to cut car dependency by up to 4% through enhanced public transport accessibility.

Planned improvements and expansions

In 2025, the Rotterdamse Elektrische Tram (RET) received approval to issue a tender for up to 46 new metro trains, with 38 units confirmed under a €578 million contract, aimed at modernizing the fleet for Lines D and E, including the RandstadRail E line between Rotterdam and The Hague. Deliveries are scheduled to begin in 2029, with full service entry by 2030, enabling reduced headways, increased capacity, and enhanced passenger comfort through longer vehicles and improved accessibility. This upgrade addresses aging infrastructure on the E line, supporting higher frequencies from the current 6 trains per hour to 12 trains per hour by 2026. For the tram-train lines (3, 4, and 34), the Haags Gemeentelijk Vervoerbedrijf () plans to introduce longer vehicles by 2025-2030 to boost on shared sections, alongside increases from 18 to 24 services per hour by 2030. Infrastructure enhancements include extended stops in for coupled operations and integral upgrades for the shared section between Laan van NOI and Leidschenveen post-2035. Additionally, €60 million has been allocated for track upgrades near Rotterdam's Waalhaven harbor, improving reliability on the E line's approaches. Longer-term visions under the Province of South Holland's transport outlook to 2040 emphasize a separate S-Bahn-style high-frequency service on the Oude Lijn corridor with free crossings over freight lines, complementing RandstadRail operations by 2030-2035. Complementary high-quality (HOV) lines, such as the connection from to Rodenrijs and R-net 400 from to , are proposed to extend the network's reach, with development explored post-2035. Sustainability goals align with national targets for a greener modal shift, promoting zero-emission operations across by 2030 via and efficient signaling, while the Metropoolregio Rotterdam Den Haag (MRDH) seeks ongoing investments to handle 400,000 additional residents by 2040.

References

  1. [1]
    RandstadRail Railway Network / Lines
    Jan 28, 2007 · RandstadRail emerged from a long-envisaged scheme to connect the transport system of the country's second city, Rotterdam, with that of Den Haag (The Hague).
  2. [2]
    RandstadRail (white-blue trams) - HTM
    RandstadRail connects the city centres of The Hague, Rotterdam and Zoetermeer with various rail connections from different carriers. HTM's RandstadRail runs ...
  3. [3]
    [PDF] RANDSTADRAIL - Light rail
    RandstadRail, as we now understand, suffers from its technical complexity. Different types of vehicles are in service and moreover, the infrastructure is ...
  4. [4]
    [PDF] controlling operations of public transport to improve reliability
    RandstadRail is a new light rail system between the cities of The Hague, Rotterdam and Zoetermeer in The. Netherlands. During peak hours, the frequency on ...
  5. [5]
    [PDF] Best Practices in Urban Sustainability in Europe and the US
    Growth in passenger numbers. Until 2006, some 17,000 people travelled on the. Zoetermeer line every day and 7,000 on the. Hofplein line. These numbers are ...Missing: ridership | Show results with:ridership
  6. [6]
    UrbanRail.Net > Europe > Netherlands > ROTTERDAM Metro
    The maximum operation speed is 100 km/h, the power supply on the Hofpleinlijn was changed from 1500 V dc to 750 V dc. *Between Leidschenveen and Laan van ...
  7. [7]
    Kattenrug op krakeling? Ombouw Hofplein- en Zoetermeerlijn
    Jul 23, 2006 · Randstadrail is de naam van het project. Het is in of rond 1989 bedacht om de snel ver-VINEXende binnenlanden van Zuid-Holland van een ...Missing: geschiedenis oorsprong
  8. [8]
    [PDF] UvA-DARE (Digital Academic Repository) - Research Explorer
    1995: The public transport companies RET, HTM, ZWN (now Connexxion), and the NS publish the report “RandstadRail, de file voorbij”. 1995. Introduction of the ...
  9. [9]
    What constitutes a “successful” mega transport project?/Leadership ...
    3 October 2001 Planning approval inc. 20 modifications from public and 240 ... RET, HTM, ZWN & NS. (1995). RandstadRail, de file voorbij. (Unpublished ...Missing: milestones | Show results with:milestones
  10. [10]
    [PDF] Adding value to the decision-making process of mega projects
    Milestones decision-making process RandstadRail (1989-2010). 1989: First plans surface for a regional public transport network linking The Hague with Rotterdam.
  11. [11]
    [PDF] Beleidsdoorlichting artikel 15 Begroting Infrastructuur en Milieu
    Oct 22, 2014 · investering zijn de Noord-Zuidlijn in Amsterdam en Randstadrail met een bijdrage van respectievelijk € 1,17 miljard en ruim € 800 miljoen.<|separator|>
  12. [12]
    Zoeken - Rijkswaterstaat Publicatie Platform
    Pilot Randstadrail : plan van aanpak. Plan van aanpak ten aanzien van de Hofpleinlijn, die fungeert als pilot voor de Randstadrail. ... Evaluatie milieu effect ...
  13. [13]
    [PDF] amsterdam - Robert Schwandl Verlag
    Oct 4, 2025 · 3) the reconstruction of the former Hofpleinlijn (from 1908) and the Zoetermeer. Stadslijn (1977-79) from S-Bahn to low-floor light rail ...
  14. [14]
    None
    Below is a merged summary of the RandstadRail Project (2002-2006) that consolidates all information from the provided segments into a single, comprehensive response. To maximize detail and clarity, I’ve organized key information into tables where appropriate (in CSV format for dense representation) and supplemented with narrative text for context. All unique details from each segment are retained, with duplicates reconciled for consistency.
  15. [15]
    [PDF] Ontsporingen bij RandstadRail - Onderzoeksraad voor Veiligheid
    Het project RandstadRail startte in 2002. De betrokkenheid van HTM werd ... een trein en een interlokale tram (bijvoorbeeld RijnGouwe Lijn, RandstadRail).
  16. [16]
    Leidschendam-Voorburg RandstadRail station - Trainstation
    The train station closed on 3 June 2006 and reopened as a RandstadRail station on 29 October 2006 for the HTM tram services and on 11 November 2006 for the RET ...
  17. [17]
    Van RampstadRail naar sexy ov - Reporters Online
    Voor RandstadRail was Zoetermeer met een stoptrein verbonden met Den Haag. Die reden maximaal eens per kwartier en trokken zo'n 50.000 reizigers per dag. Nu ...
  18. [18]
    Den Haag RandstadRail Map - UrbanRail.Net
    20 Oct 2007: Service resumed between Den Haag Centraal and Zoetermeer Seghwaert (RandstadRail 3) ... RandstadRail line 3 at Loosduinen. Metros in Holland. Thanks ...
  19. [19]
    The Hague: Extension of RandstadRail - Urban Transport Magazine -
    May 22, 2019 · 2.3 km extension of RandstadRail route 4 in Zoetermeer two days later. Beginning at previous terminus “Zoetermeer Javalaan” it reaches the new interchange ...Missing: Slinge December 2011
  20. [20]
    Dutch transport interchange inaugurated | Metro Report International
    May 21, 2019 · NETHERLANDS: The Lansingerland-Zoetermeer interchange which brings together RandstadRail light rail, NS rail and bus services, a park-and ...
  21. [21]
    Filmpje nieuw station Lansingerland-Zoetermeer - ProRail
    May 20, 2019 · Opening station Lansingerland Zoetermeer - vrijdag 17 mei 2019. Geef toestemming voor voorkeuren om deze video te bekijken. Bekijk. Groen en ...
  22. [22]
    ZoRo (Zoetermeer - Rodenrijs), gewoon maar een stadsbus
    Dec 9, 2012 · Zondag 9 december 2012 werd hij in gebruik genomen: de busbaan van 6,5 km van ergens onder Zoetermeer naar Rodenrijs.
  23. [23]
    Aanleg ZoRo-busbaan kan beginnen – Verkeerskunde
    De aanleg van de ZoRo-busbaan is het laatste onderdeel van het project RandstadRail. De grotendeels vrijliggende busbaan wordt zo'n 7 kilometer lang. Door ...<|control11|><|separator|>
  24. [24]
    COVID-19 impact on public mobility - CBS
    During the coronavirus crisis, the number of public transport check-ins (2020) decreased by up to 90 percent per day relative to one year previously.Missing: RandstadRail | Show results with:RandstadRail
  25. [25]
    Corona permanently changed public transport in the Netherlands
    Jun 8, 2022 · The income for public transport is lower, while the costs are just as high as before the corona pandemic. The providers of public transport ...
  26. [26]
    Since 1864 HTM supplies public transport with trams and buses
    HTM started with the first horse-drawn tram in 1864, became HTM in 1887, and introduced electric buses in 2019.Missing: Personenvervoer | Show results with:Personenvervoer
  27. [27]
    Netherlands: TINA on course to reshape HTM tram fleet | In depth
    Mar 15, 2024 · HTM also operates 71 Regio Citadis tram-train vehicles delivered by Alstom Transport from Salzgitter and Reichshoffen in 2006-11. These are used ...
  28. [28]
    locations, sites, depots and garages. - HTM
    HTM operates from various sites (offices, garages and depots). Here you can find contact details and directions to the various HTM sites.
  29. [29]
    [PDF] Jaarverslag 2024 - HTM
    Het jaar 2024 is het eerste jaar waarin HTM terug kon en moest naar een reguliere bedrijfsvoering zonder de tijdelijke Transitievergoeding OV. Het jaar waarin ...
  30. [30]
    Organisation - RET
    We have been providing regional public transport services as privatised company since July 2007. RET is a two-tier board public limited company.
  31. [31]
    RET reveals new metro cars | News | Railway Gazette International
    Apr 9, 2010 · They are almost identical to the RET Randstad Rail cars that run on Line E between Den Haag and Hofplein. The air-conditioned trains are 42 ...
  32. [32]
    E Route: Schedules, Stops & Maps - Slinge (Updated) - Moovit
    Track line E (Slinge) on a live map in real time and follow its location as it moves between stations. Use Moovit as a line E metro tracker or a live RET ( ...
  33. [33]
    RET E metro - Rotterdam - Transit
    The next E metro leaves 's-Gravenhage, Den Haag Centraal at 11:47 AM, and arrives at Rotterdam, Slinge at 12:33 PM. You can see the frequency of upcoming trips ...
  34. [34]
    Metro in the Carwash RET depot 's-Gravenweg Rotterdam - YouTube
    Jun 21, 2018 · The carwash for metros, at the RET metro depot 's-Gravenweg in Rotterdam. Bombardier Flexity Swift metrotype HSG3 vehicle 5705 of the RET ...
  35. [35]
    Rotterdam metro fleet tender proceeds - International Railway Journal
    Aug 4, 2025 · The first trains will be delivered in 2029 and enter service in 2030. All trains are to be delivered within three years. The new trains must be ...
  36. [36]
    RandstadRail starts to take shape | News | Railway Gazette ...
    ... 2004. The total cost was €235m, of which the state paid €127m, Den Haag €58m and the Haaglanden regional government €31m. This decision to build the tunnel ...
  37. [37]
    Netherlands Metro Map: Complete Guide to Lines, Fares & Travel Tips
    Sample Fares (2024): ; 1 zone (e.g., Amsterdam Centraal → Amsterdam Zuid), €3.20, €2.80 ; 2 zones (e.g., Rotterdam Centraal → Hoogvliet), €4.50, €3.90 ; 3 zones ( ...
  38. [38]
    [PDF] ov monitor 2024 - MRDH
    €50.000.000. €100.000.000. €150.000.000. €200.000.000. €250.000.000 ... Tram en RandstadRail lijn 3 en 4 in de regio Haaglanden. Concessiehouder ...
  39. [39]
    UrbanRail.Net > Europe > Netherlands > Den Haag Tram ...
    The tram tunnel is used by lines 2, 3, 4 and 6. Lines 3, 4 and E are part of the so-called RandstadRail network, with lines 3 and 4 running to Zoetermeer on a ...
  40. [40]
    Rotterdam Urban Transit Developments - Railway Technology
    Nov 16, 2008 · With new sections and track improvements, the tramway combines street running with dedicated track, including the 808m Erasmusbrug Nieuwe Maas ...
  41. [41]
    Accessibility of stops - HTM
    Most stops where the RandstadRail or Aveniotram stops are accessible to passengers with wheelchairs or rollators. There are a few exceptions:.Missing: stations | Show results with:stations
  42. [42]
    The Hague: sustainable transformation regional rail network – EMTA
    Feb 12, 2016 · RandstadRail sets a trend for the desired upgrade of the network from the reference that the MRDH-region is not suitable for a metro-type of ...Missing: RET integration
  43. [43]
    Parking your bike safely in The Hague - Den Haag
    Sep 17, 2021 · Would you like to park your bike safely? Park it at 1 of the Biesieklette bicycle parking facilities. They are free of charge and guarded.
  44. [44]
    [PDF] Devolution, integration and franchising Local public transport in the ...
    Mar 30, 2016 · The OV-chipkaart system allows for more tailor-made regional fares, while still retaining nationwide ticketing integration. • Tendering has ...
  45. [45]
    RandstadRail: Increase in Public Transport Quality by Controlling ...
    RandstadRail will be a new regional public transport system between The Hague, Zoetermeer and Rotterdam. RandstadRail will be a high level public transport ...
  46. [46]
    Rotterdam Metro Line E: The Hague Central To Slinge
    Jun 30, 2021 · Line E runs from The Hague Central to Slinge in Rotterdam, is 27km long with 24 stations, and has a short underground section. It uses RSG3 ...Missing: extension 2011 Calandkanaal
  47. [47]
    E Route: Schedules, Stops & Maps - Den Haag Centraal (Updated)
    Frequency (min). Mon, 05:10, Single departure. Tue, 05 ... The trip planner shows updated data for RET (Subway) and any metro, including line E, in Netherlands ...
  48. [48]
    Metro E - Dienstregeling
    De dienstregeling van de RET met alle vertrektijden voor alle haltes voor de bus, tram en metro.Slinge · Den Haag Centraal · Pijnacker Centrum · Leidschendam-Voorburg
  49. [49]
    Rodenrijs RandstadRail station - Wikipedia
    ... RandstadRail metro station. The RandstadRail station opened on 10 September 2006 for the RET Erasmuslijn metro service, currently line E, now under the ...Missing: travel | Show results with:travel
  50. [50]
    Rotterdam 2012 - Tundria
    Dec 9, 2012 · 24, the extension of line no.4 to Spangen, and the extension of metro line E to Slinge (the latter in 2011).Missing: Calandkanaal | Show results with:Calandkanaal
  51. [51]
    [PDF] Jaarverslag 2023 | RET
    Dec 31, 2023 · De stijging van de reizigerskilometers zette zich in het najaar door. reizigerskilometers 863 miljoen (2022: 742 miljoen), terwijl dit er in ...
  52. [52]
    (PDF) On-time vehicles at RandstadRail - ResearchGate
    A new light rail system, called RandstadRail was developed around the cities of the Hague and Rotterdam in 2007 to provide a new regional public transport ...Missing: initial ridership
  53. [53]
    3 Route: Schedules, Stops & Maps - Zoetermeer Centrum-West ...
    The 3 light rail (Zoetermeer Centrum-West) has 45 stations departing from Zoetermeer, Centrum-West (Spoor 2) and ending at Arnold Spoelplein (Spoor 2). Choose ...Missing: RandstadRail interchanges Rotterdam<|separator|>
  54. [54]
    Tram 3 | Departures DH Loosduinen - Zoetermeer Centrum - HTM
    Travel with HTM tram 3. Discover stops Den Haag Centraal Station, Zoetermeer Centrum-West, Grote Markt, Elandstraat, Spui, Voorburg 't Loo and HMC ...Missing: depots Kijkduin
  55. [55]
    3 Route: Schedules, Stops & Maps - Den Haag Loosduinen (Updated)
    Additional information: 3 has 44 stations and the total trip duration for this route is approximately 56 minutes. ... Line 3 Real Time light rail Tracker. Track ...Missing: length | Show results with:length
  56. [56]
    How to Get to Madestein in 'S-Gravenhage by Bus or Light Rail?
    Nov 1, 2025 · Moovit helps you find the best way to get to Madestein with step-by-step directions from the nearest public transit station. Moovit provides ...Missing: RandstadRail | Show results with:RandstadRail
  57. [57]
    Tram 4 | DH De Uithof - Zoetermeer Lansingerland - HTM
    Travel with HTM tram 4. Discover stops Leyenburg, Zoetermeer Lansingerland, Zoetermeer Centrum-West, Den Haag Centraal Station, Grote Markt, Spui, ...
  58. [58]
    HTM 4 tram - Den Haag - Transit
    The HTM 4 tram line - De Uithof - Lansingerland-Zoetermeer serves 21 tram stations in the Den Haag area departing from Voorburg, Leidschendam-Voorburg and ...
  59. [59]
    HTM 34 tram line - Den Haag - Transit
    See next departure times, schedules, route maps and all station locations for the 34 HTM. ... The total trip time for the next 34 line tram is 53 min. Is ...Missing: RandstadRail | Show results with:RandstadRail
  60. [60]
    34 Route: Schedules, Stops & Maps - Lansingerland Zoetermeer ...
    Line 34 Real Time light rail Tracker. Track line 34 (Lansingerland Zoetermeer) on a live map in real time and follow its location as it moves between stations.Missing: RandstadRail | Show results with:RandstadRail
  61. [61]
    Tram 34 | DH Loosduinen - Zoetermeer Lansingerland - HTM
    Travel with HTM tram 34. Discover stops Den Haag Centraal Station, Zoetermeer Lansingerland, Centrum West, Grote Markt, Spui and HMC Westeinde | HTM.nl.
  62. [62]
    SG3 van RET - Materieeloverzicht
    Rolling stock list SG3 van RET. Subtype of Flexity Swift of RET. Amount: 42. Overview RET Photos SG3 Vehicle type page SG3.Missing: metro fleet size
  63. [63]
    More Bombardier trains for Randstadrail
    Dec 18, 2015 · ROTTERDAM Electric Tram (RET) has exercised a €30m option with Bombardier for six additional three-car Flexity Swift light metro trains.Missing: floor platforms signaling
  64. [64]
    Bombardier Transportation to supply six BOMBARDIER FLEXITY ...
    Dec 28, 2015 · Bombardier Transportation to supply six BOMBARDIER FLEXITY Swift Light Rail Vehicles to the Rotterdam Transport Company RET. Posted on ...Missing: rolling | Show results with:rolling
  65. [65]
    Major Upgrade for Rotterdam Metro: New Train Procurement
    Aug 12, 2025 · The Rotterdam Metro will receive 38 new trains and modernize its infrastructure. RET plans to enhance comfort and reduce service intervals ...
  66. [66]
    ALSTOM wins 150 million contract for the supply of tram trains in the ...
    Apr 20, 2004 · million for the supply of 50 RegioCITADIS tram trains. The vehicles will operate on a new light rail link which connects the centres of The ...
  67. [67]
    Alstom in the Netherlands
    Read more. Latest news for the Netherlands. Press Releases 11 Sep 2024. Alstom unveils cutting-edge Test Lab in Utrecht at Raildays 2024 in the Netherlands.
  68. [68]
    ALSTOM wins 150 million euro contract for the supply of tram-trains ...
    Apr 20, 2004 · passengers and is designed with a 75 percent low floor and low ... • Floor height: 420 mm (over 75% of the length of the vehicle)
  69. [69]
  70. [70]
    Snelle buslijn tussen Lansingerland en Zoetermeer - Rijnmond
    Dec 10, 2012 · Zo rijdt buslijn 170 over de busbaan van Zoetermeer naar Rodenrijs. Buslijn 173 verbindt Bleiswijk en Bergschenhoek en maakt voor een deel ...
  71. [71]
    Snelle OV-verbinding met Rotterdam belangrijk voor bereikbare regio
    The municipality wants to take steps to arrange a fast public transport connection between Zoetermeer and Rotterdam. Work is also being done on a fast public ...
  72. [72]
    Zoetermeer to Rotterdam - 5 ways to travel via line 170 bus, and ...
    The best way to get from Zoetermeer to Rotterdam without a car is to line 170 bus and subway which takes 33 min and costs €6 - €9. More details.Missing: ZoRo 173
  73. [73]
    Milieu - RET
    In 2019 namen we de eerste 55 volledig elektrische bussen in gebruik. Inmiddels rijdt de RET met bijna honderd zero emissie bussen rond in de Rotterdamse regio.Missing: 2023 | Show results with:2023
  74. [74]
    trams and buses in The Hague and the region - HTM
    Our trams have been running in The Hague and the region since 1864. They are equipped with the latest technology to enable them to take passengers to their ...Missing: website | Show results with:website
  75. [75]
    Safe, smart, and green: Boosting European passenger rail's modal ...
    Oct 28, 2021 · Some rail infrastructure projects may incur budget overruns or encounter delays, and this phenomenon is a Europe-wide issue. Overruns and ...
  76. [76]
    RET verliest 11,4 miljoen euro en helft van passagiers - NRC
    Apr 15, 2021 · ... 2019 van 5,8 miljoen. De RET telde 95 miljoen passagiers: 46 procent minder dan in 2019. Zij legden in totaal 503 miljoen kilometers af (-45 ...<|separator|>
  77. [77]
    HTM leed verlies van 6,2 miljoen euro - Vlietnieuws
    May 29, 2021 · Het aantal reizigers daalde tot 18 procent van het niveau dat nog in 2019 werd gehaald. Inmiddels zit de HTM op 50 procent. Dat blijkt uit het ...Missing: reizigersaantallen | Show results with:reizigersaantallen
  78. [78]
    [PDF] Jaarverslag 2024 | RET
    Dec 31, 2024 · In 2024 was het totaal aantal reizigerskilometers 898 miljoen (2023: 863 miljoen), terwijl dit er in 2019 nog 921 miljoen waren. In 2024 ...
  79. [79]
    Openbaar vervoer: kansen en bedreigingen - MRDH
    Het openbaar vervoer stond er geweldig goed voor in 2019. Een jaarlijkse groei van het aantal reizigers van 3%...we raakten eraan gewend.
  80. [80]
    Sustainable mobility strategies and their impact: a case study using ...
    Specifically for the MRDH region, it does not only capture the Dutch train network in this region, but also the so-called Randstad Rail, which is the LRT ...
  81. [81]
    [PDF] ADAPTIEVE ONTWIKKEL - Provincie Zuid-Holland
    Eén van de hoofdconclusies is dat stedelijke verdichting langs hoogwaardig openbaar vervoer (HOV) – de Oude Lijn en. RandstadRail in het bijzonder – het meest ...
  82. [82]
    [PDF] Public Transport in 2040 - Government.nl
    May 13, 2019 · We plan to improve the quality of the major arteries between the Randstad conurbation and the north, east and south of the Netherlands by ...
  83. [83]
    Rijk en Metropoolregio investeren in versterking OV - MRDH
    Nov 13, 2024 · Dat is nodig om de regio bereikbaar te houden voor de huidige én de tot 2040 verwachte 400.000 nieuwe inwoners in de Zuidelijke Randstad.