49 C.F.R. § 393.82 Speedometer.
Title 49 - Transportation
Each bus, truck, and truck-tractor must be equipped with a speedometer indicating vehicle speed in miles per hour and/or kilometers per hour. The speedometer must be accurate to within plus or minus 8 km/hr (5 mph) at a speed of 80 km/hr (50 mph). [70 FR 48054, Aug. 15, 2005]
Title 49: Transportation
PART 393—PARTS AND ACCESSORIES NECESSARY FOR SAFE OPERATION
Subpart G—Miscellaneous Parts and Accessories
§ 393.82 Speedometer.
