Backstopping Brake System (BBS) is a part with two original and Accessory natures that can be installed on all manual transmission cars which their engine power is transmitted into forward wheels. By installing the system on vehicle forward wheels axle (plus (P)), when plus rotates around its axle in a reverse motion of engine, it locks the plus (P) and prevents unnecessary reverse motion of vehicle. This system can be activated or inactivated from cabin inside wirelessly through control remote system (2-3) or by wire. In the case of necessary reverse motion, this system is inactivated by pulling back its pawl. For safety, when vehicle has a severe shock, this system will be separated from joint point of vehicle body.