Vehicle undercarriage inspection systems, namely, physical platforms for supporting cameras and lighting equipment, cameras, display monitors, computer hardware and software systems for processing images of vehicle undercarriages and identifying changes in vehicle undercarriage images; train undercarriage inspection systems, namely, physical platforms for supporting cameras and lighting equipment, cameras, display monitors, computer hardware and software systems for processing images of train undercarriages and identifying changes in train undercarriage images; automated license plate reader systems primarily comprised of cameras and data processing hardware and software; vehicle occupant detection systems comprised of cameras with illuminators, signal processing software, facial detection and recognition software and data processing hardware and software; software for use with under-vehicle inspection systems for identifying occupants of a vehicle; software for use with automated license plate reader systems for identifying occupants of a vehicle; software for use with vehicle occupant detection systems for identifying the identities of vehicle occupants; container code reading systems, namely cameras, display monitors, computer hardware and software systems for reading identification markings on containers; software for use with automated license plate reader systems for identifying vehicle characteristics such as make, model, year, and color