This is a book to help you understand how to perform an airbrake and pre-trip inspection in a simplified manner on a truck and trailer combination unit designed for straight trailers. Not all provinces teach the same information on how to perform the test so take this into account. This is written for the province of Manitoba and assumes there is no damage to the tractor and trailer used for the test and the airbrake system has no leaks. . CLICK HERE TO START DOWNLOAD