The Mercedes-Benz O 305 GG – alternatively known as the Mercedes-Benz O 305 G 2 – is a former track-guided bus/tram test vehicle from Daimler-Benz. The double-articulated vehicle was structurally based on the conventional O 305 G articulated bus series; the second G, or rather the number 2, in the model designation was intended to indicate the additional articulation.
The O 305 GG was first presented to the public at the Hanover Trade Fair from April 1 to 8, 1981. Otherwise, the prototype was used exclusively – behind closed doors – on the company’s own test track on the Mercedes-Benz factory premises in Rastatt. In 1996, the vehicle was still on display at the Mercedes-Benz plant in Mannheim; it was later scrapped.
The test vehicle is older than both the first double-articulated bus (MAN, type SGG 280 H from 1982) and the first double-articulated trolleybus (Uzina Autobuzul București, type MEGA from 1988).
