1. Scope - This SAE Recommended Practice has been adopted by SAE to specify:

a. A standard procedure for chassis dynamometer testing of heavy-duty road vehicles for the purpose of determining power delivered through the drive tires.

b. A method of correcting observed power to reference test conditions.

c. A method of analyzing the test data to determine if the test results are within expected power ranges.

1.1 Field of Application - This document is applicable to DOT Class 6, 7, and 8 on and on/off highway heavy-duty road vehicles equipped with compression ignition engines, manual or automatic transmissions, and single or tandem rear drive axles.