The Automotive Transportation Service Superintendents Association(ATSSA) is a group of fleet maintenance professionals actively running light, medium, and heavy fleets in the province of Ontario and operating across Canada and the U.S.

The purpose of the A.T.S.S.A. is to provide information and expert advice by manufacturers, to people responsible for the maintenance of trucking fleets.

Membership in the A.T.S.S.A. is open to fleet superintendents and those with a primary interest in the maintenance and care of truck fleets. Regular Membership is open to someone that works in the trade, Associate and Affiliate Membership is open to original equipment manufacturers and allied industry suppliers.