Burgeoning growth in the commercial motor carrier industry over the last two decades and the increased threat to highway safety posed by many unsafe motor vehicle operations have led the U.S. Congress to (1) increase funding for the development and/or strengthening of motor carrier safety programs, rules and regulations, and (2) require greater Federal-State cooperation to ensure optimal program implementation.

FMCSA has three programs, along with other initiatives, to meet these goals: on-site safety Compliance Reviews, Roadside Inspections of commercial vehicles and drivers, and Traffic Enforcement stops of CMVs operating in an unsafe manner. Each program is implemented in conjunction with the States and devoted to improving motor carrier safety and reducing the number and severity of crashes involving large trucks and buses.

The A&I Program Measures module is made up of three sub-modules that provide reports on a variety of data for each of these FMCSA safety programs. A fourth sub-module, Program Effectiveness, provides information on the effectiveness of the programs in terms of reducing crashes involving large trucks and buses.