Abstract: A vehicle anti-theft system is configured to apply indications of driver presence and absence to control of a circuit between a brake pedal switch and a park shift interlock and/or a vehicle brake. Vehicle drivability is impaired without an indication of driver presence. The driver absence indication can include the combination open driver's door and an empty driver's seat. The driver presence indication can include authorized driver identification through entry of a code or other authorization mechanism.

Abstract: An air brake system is equipped with a service brakes and a parking brake. A control valve for the parking brake vents air therefrom to apply the parking brake. The system is configured to apply indications of driver presence and absence to effect automatic control of the parking brake control valve, including automatically applying the parking brake upon an indication of driver absence and preventing release of the parking brake without an indication of driver presence. The driver absence indication can include the combination open driver's door and an empty driver's seat. The driver presence indication can include authorized driver identification through entry of a code or other authorization mechanism, as well as a requirement that the service brakes be applied.

Abstract: A visual indicating device for mounting on a hose includes a body having an outer wall and defining a central passage extending axially through the body between a first end and a second end, and a plurality of lights arranged around the annular body so as to be visible from beyond the outer wall. A power source is arranged within the annular body, and a switch selectively energizes the plurality of lights from the power source. The visual indicating device includes groups of differing colored lights. Mounted on a hose, one of the groups indicates the general direction of the nozzle and another of the groups indicates the general direction of an exit. The switch automatically energizes the lights upon pressurization of the hose.

Abstract: A visual indicating device for mounting on a hose includes a body having an outer wall and defining a central passage extending axially through the body between a first end and a second end, and a plurality of lights arranged around the annular body so as to be visible from beyond the outer wall. A power source is arranged within the annular body, and a switch selectively energizes the plurality of lights from the power source. The visual indicating device includes groups of differing colored lights. Mounted on a hose, one of the groups indicates the general direction of the nozzle and another of the groups indicates the general direction of an exit. The switch automatically energizes the lights upon pressurization of the hose.