Abstract: A school bus stop arm and drive unit therefor are disclosed. The stop arm includes a stop sign and a drive unit for moving the stop sign between a retracted position and a deployed position. In some embodiments the stop sign is illuminated. In some embodiments the drive unit includes a controller.

Abstract: A school bus stop arm and drive unit therefor are disclosed. The stop arm includes a stop sign and a drive unit for moving the stop sign between a retracted position and a deployed position. In some embodiments the stop sign is illuminated. In some embodiments the drive unit includes a controller.

Abstract: A school bus stop arm and drive unit therefor are disclosed. The stop arm includes a stop sign and a drive unit for moving the stop sign between a retracted position and a deployed position. In some embodiments the stop sign is illuminated. In some embodiments the drive unit includes a controller.

Abstract: A school bus stop arm and drive unit therefor are disclosed. The stop an includes a stop sign and a drive unit for moving the stop sign between a retracted position and a deployed position. The drive unit comprises a motor operably coupled to the stop sign, one or more position sensors operable to detect the presence of the stop sign, and a controller for controlling operation of the motor. The controller configured to, monitor one or more operating characteristics of the motor for conditions indicative of an obstruction to movement of the stop sign, monitor the position sensor for a confirmation signal indicative of the presence of the stop sign in the deployed or retracted position, and based on the conditions indicative of an obstruction and the confirmation signal, determine if the stop sign has reached one of the deployed and retracted positions or is being obstructed.

Abstract: A school bus stop arm and drive unit therefor are disclosed. The stop an includes a stop sign and a drive unit for moving the stop sign between a retracted position and a deployed position. The drive unit comprises a motor operably coupled to the stop sign, one or more position sensors operable to detect the presence of the stop sign, and a controller for controlling operation of the motor. The controller configured to, monitor one or more operating characteristics of the motor for conditions indicative of an obstruction to movement of the stop sign, monitor the position sensor for a confirmation signal indicative of the presence of the stop sign in the deployed or retracted position, and based on the conditions indicative of an obstruction and the confirmation signal, determine if the stop sign has reached one of the deployed and retracted positions or is being obstructed.

Abstract: A system includes a router transceiver unit that is configured to be disposed on-board a vehicle system. The vehicle system may have at least a source vehicle and a separate linked vehicle that are communicatively linked with each other through a system network of the vehicle system. The router transceiver unit is configured to be communicatively coupled to a requesting operational component of the source vehicle and the system network. The router transceiver unit is also configured to receive a local data packet from the requesting operational component that is directed toward a target operational component of the linked vehicle. The router transceiver unit includes an encapsulation module that is configured to transform the local data packet into an in-tunnel data packet, wherein the local and in-tunnel data packets have different packet formats.

Abstract: A system includes a router transceiver unit that is configured to be disposed on-board a vehicle system. The vehicle system may have at least a source vehicle and a separate linked vehicle that are communicatively linked with each other through a system network of the vehicle system. The router transceiver unit is configured to be communicatively coupled to a requesting operational component of the source vehicle and the system network. The router transceiver unit is also configured to receive a local data packet from the requesting operational component that is directed toward a target operational component of the linked vehicle. The router transceiver unit includes an encapsulation module that is configured to transform the local data packet into an in-tunnel data packet, wherein the local and in-tunnel data packets have different packet formats.

Abstract: A system includes a router transceiver unit that is configured to be disposed on-board a vehicle system. The vehicle system may have at least a source vehicle and a separate linked vehicle that are mechanically linked with each other to travel together along a route and that are communicatively linked with each other through a system network of the vehicle system. The router transceiver unit is configured to be communicatively coupled to a requesting operational component of the source vehicle and the system network. The router transceiver unit is also configured to receive a local data packet from the requesting operational component that is directed toward a target operational component of the linked vehicle. The router transceiver unit includes an encapsulation module that is configured to transform the local data packet into an in-tunnel data packet, where the local and in-tunnel data packets have different packet formats.