SAE J1380_202011
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The Measurement of Highway Truck and Bus Tire Rolling Resistance (Stabilized: Nov 2020)
The force, torque, and energy methods of measurement are all in common use and should yield the same test results. Effects of steering, traction, and non steady-state tire operations are excluded from the recommended practice because they are still in the research stage. Methods of correcting laboratory data to road conditions are being developed.
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