Prisoner Transport Systems OS-BELT™ System (Officer Safety Belt System) was designed to allow the Officer to buckle a prisoner in the vehicle without having to reach across them.
With the OS-BELT™ system the risk of an Officer being injured by an unruly prisoner is greatly reduced. The system is made so that the buckle and tongue for the belt retractor system are on the door side of the vehicle rather than in the center of the vehicle. Where an officer would have to reach across a prisoner putting himself at risk of being hit by the prisoner.
The OS-Belt™ is the safest way to put passengers in a vehicle.