1983-11-07

SAE/DOT In-Service Validation Test Program 831785

Fuel efficient components and concepts when incorporated into heavy duty trucking design have been known to improve mpg performance. There has been, however, an inability within the engineering community to universally measure these values. The computer instrumentation of four Class VI straight trucks and four Class VIII tractor/semi-trailers supplied by industry, the operation of these vehicles by the SAE/DOT in revenue service, within volunteer fleets for a year and a half, and additional OEM testing, has completed the validation of test procedures for heavy duty vehicle fuel economy measurement. This testing has also resulted in the accumulation of a large amount of data relating to truck operation all of which can be assessed through the DOT VEHSIM computer prediction program.

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