Federal regulations
Oklahoma has adopted
Part 392 of the Federal Regulations.
Applicability
Part 392 applies to intrastate drivers of vehicles with a gross vehicle weight rating or gross combination weight rating, or a gross vehicle weight or gross combination weight in excess of 26,000 pounds, or transporting hazardous materials requiring the vehicle to be placarded.
Speed limit
The speed limit is 75 mph on turnpikes, 70 mph (or as posted) on rural interstates, and 65 mph on state highways.
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