Abstract: A device for use with the air braking system of a vehicle of the type in which spring operated brakes are countered by air, has valves which charge and discharge the air storage tank of a trailer and an electronic receiver which switches the valves in response to phone and GPS signals. Discharge can proceed at two different rates in order to slow the trailer initially if the signal to brake is received while the trailer is travelling. The electronic receiver is also operable by a handheld signal generation in order to release the brakes and resume trailer travel.

Abstract: A child safety seat for a motor vehicle comprising a seat body (10) having a back portion (16) and a seat portion (14), an upper back support (34) mounted on the back portion (16) for movement in a direction towards and away from the seat portion (14). The upper back support (34) is movable relative to the back portion (16) and the angle between the upper back support (34) and the seat portion (14) decreases as the upper back support (34) moves towards the seat portion (14).