A supplemental remote control system for a materials handling vehicle comprising: a wireless remote control device comprising: a wireless transmitter; and a travel control communicably coupled to said wireless transmitter, wherein actuation of said travel control causes said wireless transmitter to wirelessly transmit a remote travel request as a first type signal requesting said vehicle to advance in a first direction; a receiver for receiving transmissions from said wireless transmitter at said vehicle; and a controller that is communicably coupled to said receiver and to a traction control system of said vehicle, said controller being responsive to receipt of said first type signal by said receiver, an operator presence sensor for sensing the presence of an operator on the vehicle, and at least one sensor communicably coupled to said controller, each said at least one sensor configured to detect the presence of an object located proximate to said vehicle; characterized in that said controller is configured to communicate with a brake control system associated with said vehicle to stop or slow down said vehicle if said vehicle is moving under wireless remote control in response to receipt of said first type signal and at least one sensor indicates the detection of an object proximate to said vehicle; and the output of the at least one sensor is overridden while an operator is driving the vehicle on an operator platform, such that the controller does not slow down or stop the vehicle if an object is detected proximate to the vehicle while the operator is driving the vehicle on the operator platform. a wireless remote control device comprising: a wireless transmitter; and a travel control communicably coupled to said wireless transmitter, wherein actuation of said travel control causes said wireless transmitter to wirelessly transmit a remote travel request as a first type signal requesting said vehicle to advance in a first direction; a wireless transmitter; and a travel control communicably coupled to said wireless transmitter, a receiver for receiving transmissions from said wireless transmitter at said vehicle; and a controller that is communicably coupled to said receiver and to a traction control system of said vehicle, said controller being responsive to receipt of said first type signal by said receiver, an operator presence sensor for sensing the presence of an operator on the vehicle, and at least one sensor communicably coupled to said controller, each said at least one sensor configured to detect the presence of an object located proximate to said vehicle; characterized in that said controller is configured to communicate with a brake control system associated with said vehicle to stop or slow down said vehicle if said vehicle is moving under wireless remote control in response to receipt of said first type signal and at least one sensor indicates the detection of an object proximate to said vehicle; and the output of the at least one sensor is overridden while an operator is driving the vehicle on an operator platform, such that the controller does not slow down or stop the vehicle if an object is detected proximate to the vehicle while the operator is driving the vehicle on the operator platform.