DIRECTION-OF-TRAVEL-BASED INHIBITION OF SPEED CONTROL BASED ON TRUCK-TO-TRUCK PROXIMITY DETECTION

A proximity-detection and speed-control system (400) for a materials-handling vehicle (200a) is provided with a recommended direction of travel (R) for the vehicle (200a). A proximity sensor (410) is provided to determine proximity to a restricted member, such as another vehicle (200b), a high-value object (610), a dangerous location (710), or a pedestrian (810). If the vehicle (200a) is traveling in the recommended direction (R) or if other predetermined conditions are satisfied, the speed control function can be disabled. If, however, the vehicle (200a) is not travelling in the recommended direction (R) and the proximity sensor (410) indicates the vehicle (200a) is within a restricted distance of the restricted member (200b), (610), (710), (810), the speed control function (440) is triggered to restrict the maximum speed of travel of the vehicle (200a) and to slow the vehicle (200a) if needed. Other conditions could also be used to implement speed control.