Abstract: A ladder is safely and securely transported on a work vehicle using a pair of stanchions spaced along one side of the work vehicle. Each stanchion has a lower base portion carried on one side of the work vehicle, and an upper pole portion insertable into a hollow rung of a ladder. In this fashion, a ladder, such as an extension ladder, is supported on only one of its side rails without the need for engagement with tensioned load straps. Because the stanchions and ladder are located on the side of a work vehicle, the ladder takes up no cargo space on the cargo area of the work vehicle.

Abstract: Apparatus for monitoring and controlling the operation of one or more high intensity discharge (HID) lamps. An electronic HID lamp power supply is electrically connected to a power source and to the HID lamps. For each lamp, one or more sensors produce one or more output signals respectively representative of one or more parameters (such as light intensity, color temperature, power consumption, temperature, arc voltage, etc.) which respectively define one or more operational characteristics of the lamps.