Representing the interests of Missouri's trucking industry since 1937. Representing the interests of Missouri’s trucking industry since 1937. STATEWIDE TRADE ASSOCIATION THE ASSOCATION'S MISSION IS TO SERVE THE UNITED INTEREST OF THE MOTOR CARRIER INDUSTRY; TO ENHANCE THE INDUSTRY'S IMAGE, EFFICIENCY, PRODUCTIVITY AND COMPETITIVENESS; TO PROMOTE HIGHWAY SAFETY; PROVIDE EDUCATIONAL PROGRAMS; AND TO PROMOTE AND PROTECT THE INTERESTS OF THE MOTOR CARRIER INDUSTRY THROUGH A GOVERNMENTAL RELATIONS PROGRAM.