['CMV driving']
['Defensive driving']
03/11/2025
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Federal regulations
Arizona has adopted Part 392 of the Federal Regulations.
Applicability
Part 392 applies to a motor vehicle or combination of motor vehicles which has a gross vehicle weight rating (GVWR) of 26,001 pounds or more, and vehicles hauling hazardous materials in an amount required to be placarded.
Speed limit
75 mph on rural interstates (or as posted) and as posted on all other highways.
['CMV driving']
['Defensive driving']
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