switch 62 to the tension position locks the selective release mechanisms 116 once the four belts have been so positioned the wheelchair occupant or vehicle operator will position the switch 62 to the tension position and operate switch 64 this operation sets into motion the automatic tensioning and feedback logic contained within the controller unit sending a u201c lock u201d signal to an electronically powered cable actuator assembly 120 driving the appropriate belt tensioning motors of motor assembly 24 to their desired tensions thereby securing the wheelchair 11 from both fore and aft and lateral movement within the vehicle power to the motors is then removed effectively locking the tensioning belts 16 and 18 in their desired tensioned position release of the wheelchair from the wheelchair station is accomplished by moving the switch 62 to the u201c release u201d position and operating the start switch 64 which results in a release of the tension on all belts as a result of driving the motor 24 associated with the tensioning assembly 12 in the reverse direction from the tensioning direction as soon as sufficient slack has been created in the belt tensioning system the motors of motor assembly 24 are automatically de energized allowing the hooks.