Berlin, May 1, 2026: Commuters on Berlin’s U5 subway line experienced a pleasant surprise this Thursday: at least one train of the new J-series made its inaugural passenger run. This deployment came earlier than the May 2026 date previously announced by BVG. After years of anticipation, a crucial component in overcoming the BVG’s severe U-Bahn crisis is now operational. BUND Berlin expresses hope that the delivery and commissioning of the initial order from manufacturer Stadler Rail will proceed swiftly and without significant issues.
Insufficient Procurement Threatens Future Service Reliability
Despite this positive development, BUND Berlin views with concern statements in the recently published draft of the Public Transport Plan 2026-2028 by the Senate Department for Transport. The plan indicates that a total of only 762 wagons of the new J and JK series are to be procured for all lines of Berlin’s U-Bahn network. This figure falls short of the minimum procurement of approximately 1000 wagons agreed upon in the transport contract with BVG, and significantly less than the framework agreement with the manufacturer that allows for up to 1500 wagons.
The planned reductions in service frequency intensification for the U-Bahn warrant critical examination. While changes in utilization on certain sections of the U-Bahn network have been observed, it is challenging to realistically assess the true potential demand, given years of overcrowding during peak hours. The persistent overcrowding and unreliability of the U-Bahn network have deterred many potential users. It is well-known that in public transport, demand largely follows supply. A general restriction to a four-minute frequency from the outset precludes tapping into dormant demand potential.
It is crucial to remember that significant shifts from cars to trains and buses are still needed, especially in urban-rural transport, to achieve climate goals in the transport sector. The near-full or regular overcrowding of the U-Bahn, alongside infrastructure conditions and staff shortages, remains a critical factor affecting reliability. A certain capacity reserve is essential for stable operation. Without it, even a couple of extra school classes or a concentrated transfer from a heavily utilized regional train can quickly escalate small delays into noticeable disruptions and irregularities.
Aging Fleet and Missed Opportunities
The Public Transport Plan optimistically assesses the possibilities for extending the lifespan of some existing BVG U-Bahn series, which is questionable. Type H trains are 24 to 30 years old. The preceding F84 to F92 series are already 34 to 42 years old. Rail vehicles are generally designed for a lifespan of 35 to 40 years.
A particularly critical point is that the window for further orders of new U-Bahn wagons from the framework agreement with Stadler Rail is closing soon, with March 2030 being the latest date for additional orders. Should further demand arise, the development of a new generation of vehicles would need to be initiated. A minimum period of six years must be allocated for tendering, commissioning, development, and approval. Experience from past vehicle tenders suggests that a period of ten years is a realistic estimate.
Furthermore, service expansions are necessary. At least on the U5, in the inner-city section, evening services at five-minute intervals must be extended until at least 10:30 PM, where overcrowding is regularly observed. BUND Berlin explicitly rejects considerations for introducing new timetable schemes (e.g., 6 ⅔-minute intervals, 7 ½-minute intervals). Such changes would further distance Berlin from its goal of ensuring reliable transfer connections throughout the network based on a consistent 20-minute basic frequency. This would reduce the overall attractiveness of the public transport network, especially for transfer connections in the outer city. Specifically, the five-minute frequency on many lines should start earlier on Sundays than it currently does.
A Call for Strategic Planning and Investment
The early deployment of new U-Bahn trains on the U5 is a positive step, but it must be viewed within the broader context of Berlin’s public transport challenges. The city faces a critical juncture where short-term fixes risk undermining long-term sustainability and reliability. The BUND Berlin’s concerns highlight a fundamental tension between immediate operational needs and strategic, future-proof planning. Without a robust commitment to expanding the U-Bahn fleet to meet actual and potential demand, investing in modern infrastructure, and ensuring attractive service frequencies, Berlin risks exacerbating its public transport crisis. The window for proactive measures is narrowing, and decisive action is required to ensure that the U-Bahn remains a reliable and appealing mode of transport for all Berliners.
