35 duo buses for Zurich

Zurich's public transportation company orders 35 Mercedes-Benz O 405 GTZ articulated pusher trolley buses. A prototype of this innovative regular service bus has been undergoing testing in practical operation in Zurich since 1986. The 172 kW / 234 hp electric drive, fed by a current collector from overhead cables, is combined with a 66 kW / 90 hp five-cylinder diesel engine as auxiliary drive. If the trolley wire systems fails, the diesel engine permits travel at up to 35 km/h. Delivery of the 35 buses takes place in 1988 and 1989.