Camera system for a trailer

A method of confirming coupling of a tractor of a semi-trailer truck to a trailer, comprising the steps of:

• providing a plurality of tractors, each tractor having an indicia that is different from the indicia of each other tractor in the plurality of tractors;
• providing a trailer having
• a wheeled chassis having at least two wheeled axles at a rearward end of the wheeled chassis, retractable legs, and a kingpin at a forward end of the wheeled chassis, and
• a body comprising a cargo deck supported by the wheeled chassis;
• providing a camera having a field of view and being mounted to at least one of the wheeled chassis and the body so that, when a tractor of the plurality of tractors is operatively coupled to the forward end of the wheeled chassis, the field of view of the camera includes the indicia of the tractor of the plurality of tractors;
• detecting that the wheeled chassis is operatively coupled to a tractor;
• in response to detection, at the detecting step, that the wheeled chassis is operatively coupled to a tractor, acquiring an image from the camera;
• transmitting the image acquired at the acquiring step to a remote computer system;
• receiving a response signal from the remote computer system in response to transmitting the image acquired at the acquiring step;
• in response to receipt of a said response signal that corresponds to coupling of the wheeled chassis to a correct tractor of the plurality of tractors, actuating a confirmation signal.