Abstract: A stability detection system is provided for detecting the stability of an articulated vehicle. The stability detection system may include a weigh system configured to measure the weight distribution of the vehicle. A controller may provide a warning when the detected weight distribution exceeds a threshold.

Abstract: An articulated vehicle is provided having a cab portion, a trailer portion, and a coupling assembly positioned between the cab portion and the trailer portion. A front wheel assembly may support the cab portion, and a rear wheel assembly may support the trailer portion. The vehicle may include an overspeed protection system configured to protect the vehicle from an overspeed condition.

Abstract: A lighting system which may provide supplemental lighting for the stairs of a vehicle under conditions of low ambient lighting. Supplemental lighting may be provided for at least a period of time desired for ingress and/or egress of the operator.

Abstract: A lighting system which may provide supplemental lighting for the stairs of a vehicle under conditions of low ambient lighting. Supplemental lighting may be provided for at least a period of time desired for ingress and/or egress of the operator.

Abstract: A cooling system comprises a first cooling package, a second cooling package, and a fan control system. The first cooling package comprises a first fan and at least one heat exchanger to cool at least one fluid associated with the machine. The first fan is configured to rotate in a cooling direction and an opposite cleaning direction. The second cooling package comprises a second fan and at least one heat exchanger to cool at least one fluid associated with the machine. The second fan is configured to rotate in a cooling direction and an opposite cleaning direction. The fan control system is configured to alternate the first and second fans between a first cleaning mode and a second cleaning mode.

Abstract: A method to evaluate a secondary steering system including the steps of lowering the first hydraulic fluid pressure, determining the first hydraulic fluid pressure, sensing a second hydraulic fluid pressure, and comparing the first hydraulic fluid pressure to the second hydraulic fluid pressure. The lowering step includes lowering the first hydraulic fluid pressure provided by the primary steering system power source while the vehicle is traveling at a substantially predetermined speed. The sensing step includes sensing the second hydraulic fluid pressure provided by the secondary steering system power source while an operator of the vehicle is steering the vehicle as the vehicle travels at the predetermined speed. The comparing step includes comparing the first hydraulic fluid pressure to the second hydraulic fluid pressure to determine if the second steering system power source provided fluid to steer the ground-engaging device.

Abstract: A ground engaging vehicle having an engine, a transmission driven by the engine, a controller, and a braking system. The controller is communicatively coupled to the engine and the transmission. The braking system is communicatively coupled to the controller. The controller is configured to execute testing steps to evaluate the braking system. The braking system includes a service brake and/or a parking brake. The testing steps executed by the controller include applying either the service brake or the parking brake; engaging the transmission to drive the vehicle; significantly increasing power output from the engine to the transmission, and sensing whether the transmission has an output movement that is above a predetermined amount.

Abstract: An articulated vehicle is provided having a cab portion, a trailer portion, and a coupling assembly positioned between the cab portion and the trailer portion. A front wheel assembly may support the cab portion, and a rear wheel assembly may support the trailer portion. The vehicle may include an overspeed protection system configured to protect the vehicle from an overspeed condition.

Abstract: A method to evaluate a secondary steering system including the steps of lowering the first hydraulic fluid pressure, determining the first hydraulic fluid pressure, sensing a second hydraulic fluid pressure, and comparing the first hydraulic fluid pressure to the second hydraulic fluid pressure. The lowering step includes lowering the first hydraulic fluid pressure provided by the primary steering system power source while the vehicle is traveling at a substantially predetermined speed. The sensing step includes sensing the second hydraulic fluid pressure provided by the secondary steering system power source while an operator of the vehicle is steering the vehicle as the vehicle travels at the predetermined speed. The comparing step includes comparing the first hydraulic fluid pressure to the second hydraulic fluid pressure to determine if the second steering system power source provided fluid to steer the ground-engaging device.

Abstract: A stability detection system is provided for detecting the stability of an articulated vehicle. The stability detection system may include a weigh system configured to measure the weight distribution of the vehicle. A controller may provide a warning when the detected weight distribution exceeds a threshold.

Abstract: A method of cooling light emitting diode (LED) lighting systems and associated structures are disclosed and claimed herein. The method involves determining the areas of a printed circuit board (PCB) onto which LEDs will be mounted will have the highest temperature during operation and positioning thermal vias of a certain size in or adjacent that area. The thermal vias extend from the PCB first side through the PCB substrate to the PCB second side to allow fluid flow through the PCB. The thermal vias are coated with a plating so that thermal energy is conductively transferred from the area adjacent an LED or resistor to the thermal via. From the thermal via the thermal energy may be dissipated to the atmosphere adjacent the thermal via through various modes. Novel structures according to the present invention include LED circuits, light fixtures, PCBs, and various combinations thereof employing the thermal vias.