This SAE Recommended Practice establishes a procedure for determination of vehicle road load force for speeds between 115 and 15 km/h (71.5 and 9.3 mph). It employs the coastdown method and applies to vehicles designed for on-road operation. The final result is a model of road load force (as a function of speed) during operation on a dry, level road under reference conditions of 20 degrees C (68 degrees F), 98.21 kPa (32.00 in-Hg), no wind, no precipitation, and the transmission in neutral.
SAE J2263-1996 history
2020SAE J2263-2020 Road Load Measurement Using Onboard Anemometry and Coastdown Techniques
2008SAE J2263-2008 Road Load Measurement Using Onboard Anemometry and Coastdown Techniques
1996SAE J2263-1996 Road Load Measurement Using Onboard Anemometry and Coastdown Techniques