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RandstadRail
RandstadRail tram at Van Tuyllpark station
RandstadRail tram at Van Tuyllpark station
Overview
LocaleRotterdam–The Hague metropolitan area, South Holland, Netherlands
Transit typeTram-train
Number of lines4
Number of stations73
Daily ridership125,000 (2018)[1]
Operation
Began operation29 October 2006 (2006-10-29)
Operator(s)HTM Personenvervoer (HTM) and Rotterdamse Elektrische Tram (RET)
Rolling stock
Technical
System length~71 km (44 mi)
Track gauge1,435 mm (4 ft 8+1⁄2 in)

RandstadRail (Dutch pronunciation: [ˈrɑntstɑtˌreːl]) is a tram-train network in the Rotterdam–The Hague metropolitan area in the west of the Netherlands that is jointly operated by HTM Personenvervoer (HTM) and Rotterdamse Elektrische Tram (RET). It connects the cities of Rotterdam, The Hague and Zoetermeer, primarily using former train and existing tram tracks.[2][3]

Named after the Randstad conurbation, the light rail network came into operation in 2006, after regular train services on the Hofpleinlijn and Zoetermeer Stadslijn had been discontinued.[1] The system consists of four routes and serves 73 stations, with a total length of approximately 71 kilometres (44 mi). In 2018, it had a daily ridership of around 125,000 passengers.[1]

Rail network

[edit]
Map of the RandstadRail network between The Hague (northwest), Zoetermeer (northeast) and Rotterdam (south) as of 2021

The RandstadRail network consists of four routes: one metro line (E) between The Hague and Rotterdam, and three tram-train lines (3, 4 and 34) between The Hague and Zoetermeer. Line E is operated by RET and uses high-floor Flexity Swift vehicles, while lines 3, 4 and 34 are operated by HTM and use low-floor RegioCitadis vehicles.[3] Stations that are served by both types of carriages have extended platforms with a higher and a lower part.

Line Route Stations Opened Type
 E 
 Den Haag Centraal – Rotterdam Slinge 23 2006 High-floor
3
 Den Haag Loosduinen – Zoetermeer Centrum-West 39 2007 Low-floor
4
 Den Haag De Uithof – Lansingerland-Zoetermeer 33 2006
34
 Den Haag De Savornin Lohmanplein – Lansingerland-Zoetermeer 31 2020

Line E

[edit]
See also: Rotterdam Metro line E

Line E (formerly Erasmuslijn) is a metro line, which also belongs to the Rotterdam Metro network. For a great part, it runs on the former Hofpleinlijn railway line between Den Haag Centraal railway station and Rotterdam Hofplein railway station.[4] After the train services had been discontinued, the track was re-opened as a RandstadRail line in September 2006, running between Nootdorp and Hofplein.[5] In November 2006, the line was extended to The Hague.

As part of the line's conversion to RandstadRail operation, it began using RET metro trains, and more stops were added and train frequencies increased. Although the conversion had not been flawless, with a series of technical problems and a derailment, the line has been in full operation since September 2007.

In 2010, Hofplein terminus was replaced with the Statenwegtracé, a bored tunnel connecting the line with the local metro network at Rotterdam Centraal railway station.[5] In December 2011, the line was further extended to Slinge metro station in the south of Rotterdam, sharing the section between Rotterdam Centraal and Slinge with the already existing line D.[2][5]

Lines 3, 4 and 34

[edit]

The RandstadRail network originally included two tram-train lines: line 3 between Loosduinen and Zoetermeer Centrum-West, and line 4 between De Uithof and Lansingerland-Zoetermeer.[2] On 23 July 2020, a third tram-train line was added to the network: line 34, which serves as a combination of lines 3 and 4, connecting Loosduinen to Lansingerland-Zoetermeer railway station.[6]

West of Den Haag Centraal railway station, these lines are operated as regular street-running tram lines, partially interlined with the local network and passing through the Haagse tramtunnel, a 1.25 km (0.78 mi) tunnel under the Grote Marktstraat [nl] in the city centre. Between Den Haag Centraal and Zoetermeer, they operate on dedicated tracks as a light rail system. The section from Den Haag Centraal to Laan van NOI is elevated on a viaduct. From Laan van NOI to Leidschenveen, the lines share the track and stations with line E.

East of Leidschenveen, line 3 follows the same route as the former Zoetermeer Stadslijn, while lines 4 and 34 branch off towards Oosterheem after Seghwaert station.[2] In 2019, the Oosterheem branch was extended from Javalaan to Lansingerland-Zoetermeer.[7]

Other services

[edit]
A ZoRo bus on the newly constructed bus lane near Berkel en Rodenrijs

ZoRo buses

[edit]

In December 2012, two bus lines were added to the network.[8] These so-called "ZoRo" buses run between Zoetermeer and Rodenrijs RandstadRail station, where they connect with RandstadRail line E. A new bus lane was constructed for the project.[1][8] The buses are operated by RET and have an almost instant connection to arriving metros at Rodenrijs station. At the termini in Zoetermeer, the ZoRo buses connect with regional bus lines (Arriva and Veolia Transport) and RandstadRail lines 3, 4 and 34.

Line Route
170
173

Associated tram lines

[edit]

Despite not being a part of the RandstadRail network, lines 2 and 19 of HTM's local tram network make use of RandstadRail-liveried RegioCitadis vehicles in addition to the regular Siemens Avenio trams.[3] For line 19, this is necessary as it lacks balloon loops at its termini, meaning that the uni-directional GTL8 vehicles cannot be used on this route. Since 2015, the rolling stock of line 2 has been gradually replaced by Avenio vehicles.

See also

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References

[edit]
[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

RandstadRail

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from Grokipedia
RandstadRail is a transit system in the western that integrates and metro 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 Dutch 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 (NS), 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 metro 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, HTM, ZWN (later ), and NS 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 agreement between HTM, RET, and provincial governments of and , culminating in planning approval on October 3, 2001, after incorporating public feedback and stakeholder 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 national and regional allocations totaling over €800 million, primarily from the Dutch , 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 Dutch government's Meerjarenprogramma Infrastructuur en . The project involved rebuilding approximately 36 km of existing tracks, primarily the former Netherlands Railways (NS) 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 NS 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 HTM 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 NS 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 multimodal hub linking RandstadRail with NS 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 dc 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, HTM 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 service 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 operator 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 metro standards. Trains on Line E employ metro 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 tender 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 HTM and RET, with services running every 5-15 minutes during peak hours, varying by line. This collaboration builds on the distinct roles of HTM 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 DC on main routes and 600 V DC on urban tram lines within , primarily via overhead lines for the sections operated by HTM 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 HTM 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 HTM 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 commercial 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 HTM 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 tender for 38 new metro trains valued at €578 million, with 9 units earmarked to augment capacity on Line E by reducing headways; these future vehicles will incorporate enhanced energy efficiency 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 . HTM 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 operator safety by isolating the control 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 km. 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, HTM 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; HTM 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 network usage, with total RET passengers reaching 162 million annually (including metro, , 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 HTM 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 (HTM) plans to introduce longer vehicles by 2025-2030 to boost capacity 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 capacity 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 ZoRo connection from to Rodenrijs and R-net 400 from to , are proposed to extend the network's reach, with ZoRo 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

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