The invention relates to a lubricating device for applying lubricant to the wheel flange of a running wheel, or to the side surface of a running rail. A lanyard is operatively coupled to upright stanchion above the work surface and is adapted to be draped and secured about the tree to suspend the frame from the tree. In the disclosed embodiments, these counteracting biasing elements include a lever and at least one spring which are arranged to provide a low-profile switch. The data manager retrieves the stored set of location values and monitors travel of a vehicle based on location values produced by a location sensor coupled to the vehicle. The accessory module may also be configured to include a taser andor a compact video camera.