The ZF AVE 130 Electrical Portal Axle with integrated wheel hub drive is a zero-emission solution for electric buses, hybrid buses and trolleybuses. This axle is suitable for both solo and articulated vehicles, and is designed for demanding inner-city applications. The unit is compatible with the companies low-floor axles AV 132 and AVN 132, and offers high peak and continuous power through liquid cooling. It can offer significant fuel savings in city traffic, according to the company.