Abstract: Towing attachments for attaching trailers to the end of various vehicles are disclosed, including a tubular sleeve attached to the vehicle, an extension bar having one end rotatably attached to the tow bar of the trailer while the other end is adapted to be releasably attached to the tubular sleeve and having a cross-sectional shape which is complementary to that of the tubular sleeve so that it may slide smoothly into same for attachment thereto, and a clamp for releasably clamping the end of the extension bar to the tubular sleeve, the clamp including a fixed trunnion extending from the tubular sleeve and a resilient clamp affixed to the extension bar so that the resilient clamp can be releasably clamped to the fixed trunnion when the extension bar slides into the tubular sleeve, the resilient clamp being pivotable between a first position in which it does not interfere with the sliding of the extension bar into the tubular sleeve and a second position in which it prevents the extension bar from being slida

Abstract: Accessory equipment for road vehicles.The trailer comprises a chassis, whose side members 4 define, as from the rear cross-member 3, two clearances 5 for the clearance of wheels 12 of two running gears, mounted on cross-members 4 by adapting fitting 16 assuming a bearing support function and articulation--folding down function of said running gears.A trailer is provided which can be folded up within the boot of a car.