Rhein-Ruhr-Express

Rhein-Ruhr-Express, commonly abbreviated RRX and also styled Rhein Ruhr Xpress, is a regional rail system serving the densely populated Rhine-Ruhr metropolitan area and adjoining regions of western Germany. It is designed as an integrated transport and infrastructure program rather than as a conventional railway company: the public authorities planned improvements to the main rail corridor, standardized the rolling stock, and awarded operation of individual services through competitive procurement. The system’s central purpose is to make travel along the highly congested corridor between Dortmund and Cologne faster, more frequent, more reliable, and more attractive than private-car travel. The core RRX corridor runs through major urban and industrial centers including Dortmund, Bochum, Essen, Mülheim an der Ruhr, Duisburg, Düsseldorf, Leverkusen, and Cologne. Once the planned service pattern and infrastructure are completed, the central section is intended to support trains at approximately 15-minute intervals. Lines branch from this spine to Aachen, Hamm, Paderborn, Bielefeld, Minden, Kassel, Bonn, Koblenz, Wesel, Münster, Osnabrück, and other cities. This structure retains the regional reach of the former Regional-Express network while creating a more legible, coordinated, and higher-capacity system. The first RRX-branded line began operating in December 2018. By 2023, five services used RRX-branded trains or formed part of the RRX operating concept: RE 1, RE 4, RE 5, RE 6, and RE 11. The four principal services using the central trunk route were the NRW-Express between Aachen and Hamm, the Rhein-Express between Koblenz and Wesel, the Rhein-Weser-Express between Cologne/Bonn Airport and Minden, and the Rhein-Hellweg-Express between Düsseldorf and Kassel. The Wupper-Express between Aachen and Dortmund used RRX equipment but did not operate over the entire central trunk section. The system uses Siemens Desiro HC electric double-deck trainsets. Eighty-four trainsets were procured for the program, with deliveries taking place from 2018 to 2020. The vehicles were selected for their acceleration, capacity, speed, accessibility, and ability to operate in multiple-unit formations. A paired consist provides about 800 seats and incorporates air conditioning, wireless internet, power outlets, reading lights, folding tables, low-floor access features, accessible toilet facilities, and spaces for wheelchairs and bicycles. The trains were procured separately from the operating contracts and leased to the selected operators, a model intended to reduce barriers to competition. RRX also depends on extensive infrastructure work. Planned and completed measures include additional tracks and platforms, revised junctions and flyovers, upgraded signaling, station alterations, and the reallocation of some traffic between regional and suburban rail tracks. The work is divided into six planning sections between Cologne and Dortmund. Some sections have been completed or are close to completion, while others remain in planning or await construction. The overall construction program has been planned for completion around 2030. When fully implemented, the project is expected to remove a substantial number of daily automobile trips from the region’s roads.

RRX emerged from the need to improve regional rail capacity in the Rhine-Ruhr area, one of Germany’s most densely populated and economically important urban regions. The main railway corridor between Dortmund and Cologne carries regional, long-distance, suburban, and freight traffic, creating recurring constraints on frequency, punctuality, and journey times. The RRX concept therefore combines a redesigned regional service pattern with physical expansion and modernization of the railway. A distinctive feature of the program is the separation of rolling-stock procurement from operating contracts. Rather than requiring each railway operator to purchase its own trains, the responsible public authorities procured standardized vehicles and arranged for their lease over a long period. This approach was intended to encourage competition when operating concessions were tendered. A 2011 study concluded that double-deck trains were particularly appropriate because they could provide more seats while remaining relatively short and capable of fast acceleration. The tender specified, among other requirements, a top speed of at least 160 km/h, acceleration of at least 1.0 m/s², bidirectional operation, multiple-unit capability, compatibility with the regional platform height, and regulatory approval. Siemens won the rolling-stock competition with its Desiro HC design. The resulting RRX trains use powered single-deck end cars and two unpowered double-deck intermediate cars. Trainsets can operate in pairs, providing roughly 800 seats, and are designed for rapid boarding through broad doors and spacious vestibules. Passenger amenities include wireless internet, air conditioning, electrical outlets, reading lamps, folding tables, accessible areas, bicycle accommodation, and an accessible toilet. The trains also incorporate windows designed to reduce interference with mobile data signals. A digitally equipped maintenance center was opened in Dortmund-Eving in September 2018, shortly before the first line entered service. Passenger operations began in December 2018. The initial RRX services progressively replaced or incorporated existing Regional-Express routes. By 2023, the branded operating pattern covered five lines or services using RRX equipment. The main trunk routes connected Aachen, Cologne, Düsseldorf, the Ruhr cities, and Dortmund, while branches extended toward Koblenz, Wesel, Kassel, Bielefeld, Minden, and other destinations. The service model aimed to produce a quarter-hourly combined frequency over the busiest central section rather than simply increasing the frequency of one individual line. The infrastructure element is divided into six planning sections, covering the corridor from Cologne through Düsseldorf and the Ruhr area to Dortmund. Projects include new or altered tracks, additional platforms, flyovers, signaling changes, station reconstruction, and the reassignment of some regional services to suburban tracks. The Cologne–Düsseldorf Benrath section has seen substantial work, while the Mülheim section required comparatively limited changes and was completed. Other sections, particularly around Düsseldorf, Duisburg, Essen, Bochum, and Dortmund, require more extensive construction or revised planning. The Dortmund section has also been affected by changes associated with Germany’s Deutschlandtakt long-term timetable concept. The program remains a long-term modernization effort rather than a completed network. Construction has been planned to continue toward approximately 2030. Its intended benefits include more frequent service, improved punctuality, better passenger comfort, increased network capacity, and a shift of travel from cars to rail. The program is expected to replace approximately 24,000 automobile trips per day once fully realized, although the final service pattern depends on infrastructure delivery, planning approvals, and future demand.

• 2023

  Five services operate with RRX equipment or branding

  [1]Rhein-Ruhr-Expressen.wikipedia.org

  By 2023, RE 1, RE 4, RE 5, RE 6, and RE 11 formed the operating RRX service group described in the reference material.

• 2020

  RRX train deliveries completed

  [1]Rhein-Ruhr-Expressen.wikipedia.org

  The 84-train Siemens Desiro HC fleet was delivered over the 2018–2020 period.

• 2018

  RRX train maintenance facility opens in Dortmund-Eving

  [1]Rhein-Ruhr-Expressen.wikipedia.org

  A digitally equipped maintenance facility opened in September to support preventive maintenance and cleaning of the new fleet.

• 2018

  First RRX line enters passenger service

  [1]Rhein-Ruhr-Expressen.wikipedia.org

  The first branded RRX service began operating in December 2018.

• 2011

  Double-deck rolling stock selected as the preferred concept

  [1]Rhein-Ruhr-Expressen.wikipedia.org

  A study concluded that double-deck regional trains offered appropriate capacity and operating characteristics for the planned RRX network.

• Planned target for completion of major construction

  [1]Rhein-Ruhr-Expressen.wikipedia.org

  The broader infrastructure program is planned for completion around 2030, subject to planning and construction progress.

A high-frequency, high-capacity regional rail alternative for the Rhine-Ruhr metropolitan corridor, combining standardized trains with coordinated infrastructure investment and frequent cross-city connections.

• Passenger rail network · 2018

  RRX regional rail services

  The RRX service family consists of branded or RRX-equipped Regional-Express routes across western Germany. Its central operating concept links the Dortmund–Cologne corridor with branches toward Aachen, Koblenz, Wesel, Kassel, Bielefeld, Minden, and other cities. The main services described for the operating network are RE 1, RE 4, RE 5, RE 6, and RE 11. The long-term plan calls for a coordinated pattern in which several hourly routes overlap on the busiest central section to create approximately 15-minute intervals.

• Electric double-deck train · 2018

  Siemens Desiro HC RRX

  The RRX fleet comprises Siemens Desiro HC electric multiple-unit trainsets configured with powered single-deck end cars and two double-deck intermediate cars. The trains are designed for regional operation at speeds of at least 160 km/h and for rapid acceleration and boarding. Passenger features include air conditioning, Wi-Fi, power outlets, reading lights, folding tables, accessible spaces, bicycle areas, and an accessible toilet. Two trainsets can be coupled to provide approximately 800 seats.

• Rail infrastructure modernization

  RRX infrastructure program

  The infrastructure program supports the additional RRX frequency through track expansion, station and platform modifications, new or improved junctions and flyovers, and upgraded signaling. The work is organized into six planning sections between Cologne and Dortmund. Some sections have been completed or are nearing completion, while substantial projects around Düsseldorf, Duisburg, Essen, Bochum, and Dortmund remain subject to construction or revised planning.

• 2018

  Launch RRX passenger operationsProduct launch

  Background

  The RRX program was created to improve frequency, capacity, and reliability on the congested Rhine-Ruhr rail corridor.

  Action taken

  The first RRX line began passenger service in December 2018 using the new standardized rolling stock.

  Aftermath

  Additional Regional-Express routes subsequently adopted RRX branding or equipment while the supporting infrastructure program continued.

  Source

• 2011

  Adopt double-deck trains for the RRX fleetStrategy

  Background

  The planned network required high passenger capacity, rapid acceleration, and compatibility with existing regional rail infrastructure.

  Action taken

  The procurement process selected double-deck trainsets as preferable to single-deck alternatives, and the technical tender specified high speed, acceleration, accessibility, and multiple-unit requirements.

  Aftermath

  Siemens won the subsequent competition with the Desiro HC, which became the standardized RRX train type.

  Source

1. 1Rhein-Ruhr-Expressen.wikipedia.org
2. 2Rhein-Ruhr-Express official websiterrx.de