INTERSTATE COMMERCE requires all drivers to stay within the hours of service limits if:

• Vehicle has a gross vehicle weight rating or gross combination weight rating, or gross vehicle weight or gross combination weight, of 10,001 lbs. or more, whichever is greater.
• Is used in transporting hazardous material in a quantity requiring placarding.

[Source: CFR 390.5 Definition of CMV]

Ag exemption – operators transporting agricultural commodities or farm supplies with a 100 air-mile radius.

INTERSTATE TRAVEL requires all operators stay within the limit of hours of service with the exception of those operators who operate two-axle vehicles under 10,000 lbs. gross weight, and operators transporting agricultural commodities or farm supplies within a 100 air-mile radius.

[Source: CDL Guide 2007-2009: Department of Transportation Requirements Inter-State Authority]

Hours of Service

• Cannot drive more than 12 hours following 10 consecutive hours off duty.
• For any period after having been on duty more than 15 hours.
• After having been on duty for 70 hours in any period of 7 consecutive days.

Intrastate

• Cannot drive more than 12 hours following 8 consecutive hours off duty.
• For any period after having been on duty more than 15 hours.
• After having been on duty for 70 hours in any period of 7 consecutive days.

(CFR 395.3 Hours of Service for Property Drivers)