Electric buses operating on Germany’s Kehlsteinstraße mountain route near Berchtesgaden recover approximately five percent of their battery capacity during the descent, according to data from public transport reports. Transport authorities deployed MAN Lion’s City 12 E electric vehicles on the steep tourist route to handle a maximum road gradient of 24 percent, navigating five narrow tunnels while servicing the highest elevated bus terminus in Germany at an altitude of 1,710 meters.
Route Characteristics and Vehicle Specifications
The Kehlsteinstraße route measures 6.5 kilometers and climbs roughly 700 vertical meters, according to route documentation. Regionalverkehr Oberbayern operates eight 12-meter electric buses on the Kehlsteinlinie, which began running in June 2023 following two years of technical trials. Each vehicle features a passenger capacity of 41 seated places and carries six battery packs mounted on the roof with a total capacity of 480 kWh. A central electric motor powers the rear axle, delivering a maximum output of 240 kW and up to 2,100 Nm of torque through a single-speed transmission.
Regenerative Braking and Energy Efficiency
Vehicle efficiency on the mountain road relies heavily on regenerative braking systems. Ascending the 24-percent incline consumes about ten percent of the battery’s total capacity, according to operational data. The subsequent descent allows the MAN electric bus to regenerate roughly five percent of that capacity back into the system. This energy recovery enables a single bus to complete eight to ten daily trips without requiring mid-day charging stops.
Pro Tip: When planning a visit to the high-altitude terminus, check seasonal operating schedules as winter snow and avalanche risks close the road entirely.
Infrastructure and Fleet Integration
Charging infrastructure was established at the Regionalverkehr Oberbayern facility in Bischofswiesen, featuring four charging stations with a maximum output of 200 kW. Regionalverkehr Oberbayern maintained a total fleet of 449 buses, including 18 electric models, according to figures released at the end of 2025. The route itself has been closed to private individual automobile traffic since 1952, when regular bus services first began operating under line designation 849.
Frequently Asked Questions
How steep is the road to the Eagle’s Nest?
The Kehlsteinstraße reaches a maximum gradient of 24 percent across its 6.5-kilometer length, climbing about 700 vertical meters through five tunnels.
How much energy do the electric buses recover on the way down?
Electric buses regain about five percent of their battery capacity during the descent through regenerative braking, after using roughly ten percent of the charge on the climb.
What vehicles are used on the line?
Regionalverkehr Oberbayern deploys MAN Lion’s City 12 E electric buses, which feature modified rear axles and a 480 kWh rooftop battery capacity.
When is the bus route open?
The service runs seasonally with buses departing every 25 minutes during peak periods, but closes in winter due to snow and avalanche hazards.
Did you know? The final bus turning platform at Buswendeplatte sits at 1,710 meters above sea level, making it the highest elevated bus route terminus in Germany.
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