Abstract: An onboard unit for a road toll system including: at least one transceiver for transmitting toll-relevant data to transceiver stations for forwarding to a central processing unit of the road toll system; at least one camera, which is directed towards a passenger compartment of a vehicle carrying the onboard unit and can create at least one image recording of at least one section of the passenger compartment; and an evaluation unit connected down-line of the camera that detects and counts the passengers of the vehicle in the image recording.

Abstract: An onboard unit for a road toll system including: at least one transceiver for transmitting toll-relevant data to transceiver stations for forwarding to a central processing unit of the road toll system; and at least one camera, which is directed towards an environment in front of a vehicle carrying the onboard unit and can create at least one image recording of at least one section of the environment. The camera forms an object detector, which detects the presence of an object remaining substantially stationary in a moving environment of the vehicle and upon detection of such an object causes the camera to record an image.