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A safety interlock system for a motor vehicle having a braking system capable of actively applying the vehicle brakes with an object sensor capable of detecting the presence of an object such as a pedestrian in the danger zone at the front of the vehicle, a door sensor capable of detecting the open

A safety interlock system for a motor vehicle having a braking system capable of actively applying the vehicle brakes with an object sensor capable of detecting the presence of an object such as a pedestrian in the danger zone at the front of the vehicle, a door sensor capable of detecting the open or closed state of the vehicle exit doors, an interlock override switch and a control circuit. The control circuit is capable of activating the safety interlock system when a door open signal is received from said door sensor. When the safety interlock system is activated the control circuit is capable of activating the vehicle brakes to prevent motion of the vehicle when an object signal is received from the object sensor. The control circuit deactivates the safety interlock system at a predetermined time after receiving a door closed signal or an override signal.

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A safety interlock system for a motor vehicle having a braking system capable of actively applying the vehicle brakes with an object sensor capable of detecting the presence of an object such as a pedestrian in the danger zone at the front of the vehicle, a door sensor capable of detecting the open

A safety interlock system for a motor vehicle having a braking system capable of actively applying the vehicle brakes with an object sensor capable of detecting the presence of an object such as a pedestrian in the danger zone at the front of the vehicle, a door sensor capable of detecting the open or closed state of the vehicle exit doors, an interlock override switch and a control circuit. The control circuit is capable of activating the safety interlock system when a door open signal is received from said door sensor. When the safety interlock system is activated the control circuit is capable of activating the vehicle brakes to prevent motion of the vehicle when an object signal is received from the object sensor. The control circuit deactivates the safety interlock system at a predetermined time after receiving a door closed signal or an override signal. 1. In a utility vehicle having a frame supported by a steering axle having a pair of steered wheels pivotally mounted thereon, a drive axle having a pair of drive wheels mounted thereon, and a middle axle having a pair of support wheels mounted at opposing ends thereof, the improvement comprising: a longitudinally extending bogey beam pivotally connected to said frame and having a forward end and a rearward end, said steering ale being connected to said forward end of said bogey beam and said middle axle being supported from said rearward end of said bogey beam. 2. The utility vehicle of claim 1, wherein said bogey beam is connected to said frame by a pivot assembly defining a transverse pivot axis. 3. The utility vehicle of claim 2, wherein a load imposed on said frame is supported by each drive wheel and said bogey beam through said pivot assembly which distributes a portion of said load to said steered wheels and said support wheels. 4. The utility vehicle of claim 3, wherein a portion of said load carried by said bogey beam is proportionally distributed between said steering axle and said middle axle, the respective proportions determined by the location of said pivot assembly along the length of said bogey beam. 5. The utility vehicle of claim 4, wherein said middle axle is driven by a drive mechanism transferring rotational power from said drive axle. 6. The utility vehicle of claim 5, wherein said middle axle is formed as a pair of laterally spaced stub axles, each said stub axle having one of said support wheels rotatably mounted thereon. 7. The utility vehicle of claim 6, wherein said stub axles are interconnected by a support beam connected to said rearward end of said bogey beam. 8. A utility vehicle comprising: a frame; a rear drive axle supported by said frame and having a pair of drive wheels rotatably supported thereon; a front steering axle having a pair of steered wheels pivotally mounted thereon; a middle axle having a pair of support wheels mounted at opposing ends thereof; and a longitudinally extending bogey beam pivotally connected to said frame and having a forward end and a rearward end, said steering axle being connected to said forward end of said bogey beam and said middle axle being supported from said rearward end of said bogey beam. 9. The utility vehicle of claim 8, wherein said bogey beam is connected to said frame by a pivot assembly defining a transverse pivot axis. 10. The utility vehicle of claim 9, wherein a load imposed on said frame is supported by each said drive wheel and said bogey beam which distributes a portion of said load to said steered wheels and said support wheels. 11. The utility vehicle of claim 10, wherein a portion of said load carried by said bogey beam is proportionally distributed between said steering axle and said middle axle the respective proportions determined by the location of said pivot assembly along the length of said bogey beam. 12. The utility vehicle of claim 11, wherein said middle axle is driven by a drive mechanism transferring rotational power from said drive axle. 13. The utility vehicle of claim 12, wherein said middle axle is formed as a pair of laterally spaced stub axles interconnected by a support beam connected to said rearward end of said bogey beam, each said stub axle having one of said support wheels rotatably mounted thereon. 14. The utility vehicle of claim 11, wherein said steering axle and said middle axle are pivotally connected to the respective ends of said bogey beam to permit an independent transverse oscillation of each of said steering axle and said middle axle relative to said bogey beam. 15. A utility vehicle comprising: a frame; a rear drive axle supported by said frame and having a pair of drive wheels rotatably supported thereon: a longitudinally extending bogey beam pivotally connected to said frame by a pivot assembly defining a transverse pivot axis, said bogey beam having a forward end and a rearward end