The invention is generally related to a portable inspection apparatus for placement in an inspection area and for inspection of vehicles passing through the inspection area. The portable inspection apparatus comprises a support structure arranged to extend away from a surface of the inspection area, a base for disposal on the surface, and an inspection field generator comprising an emitter and a detector for generating an inspection field. A first one of the emitter and the detector may be supported by the support structure and a second one of the emitter and the detector may be supported by the base. A ramp is arranged to pivot relative the surface between a stowed position and a deployed position in which the ramp extends away from the base for allowing a vehicle to pass over the ramp and the base through the inspection field.