The TRAILteck products from Redtch, Inc., are designed to help you do quicker and more accurate tractor/trailer inspections. TRAILteck acts as a tractor simulator and allows mechanics to single handedly perform complete and thorough inspections of semi-trailers. TRAILteck is easy to use and enables the mechanic--without the help of an assistant--to conveniently check and diagnose lighting, electrical faults, brake adjustment and system air leaks.