THIS paper outlines tests made to verify the SAE recommended practice for estimating truck ability performance described in TR-82.
The author has collected data on four vehicles and compares it with the results computed in TR-82 and with a Method X. The data includes information on air and rolling resistance, effect of wind velocity, chassis friction power, grade ability, and the like.
The author concludes that the SAE method of TR-82 is at the present time the most reliable method for computing truck ability.