Federal & State Regulations | Speed limits - maximum for commercial motor vehicles state comparison

Keep in mind that the speed limit is a guideline. Weather, road conditions, and terrain are other important factors that must be considered when determining appropriate speed.

State comparison

State	Speed Limit (except when otherwise posted)
Alabama	70 mph on rural interstate; 65 mph on selected 4-lane highways.
Alaska	65 mph.
Arizona	75 mph on rural interstates. 65 mph on other highways.
Arkansas	75 mph 70 mph (vehicle or combination of vehicles with a GVWR, GCWR, GVW, or GCW of 26,001 pounds or more)
California	55 mph on all highways for the following vehicles: 1. A motortruck or truck tractor having three or more axles or any motortruck or truck tractor drawing any other vehicle; 2. A passenger vehicle or bus drawing any other vehicle; 3. A school bus transporting any school pupil; 4. A farm labor vehicle when transporting passengers; 5. A vehicle transporting explosives; 6. A trailer bus, as defined in Section 636.
Colorado	75 mph on specific sections of rural interstate; 65 mph on surfaced 4-lane interstates; 55 mph other highways; 40 mph open mountain highways.
Connecticut	65 mph on interstate highways; 65 mph on limited access state highways.
Delaware	65 mph on specified highways; 55 mph on other highways.
District Of Columbia	55 mph on all highways.
Florida	70 mph on rural interstates; 65 mph on selected 4-lane highways; 55 mph on most other highways.
Georgia	70 mph on interstate highways; 55 mph to 65 mph on other highways.
Hawaii	40 mph to 60 mph depending on highway used.
Idaho	80 mph on designated portions of interstates; 75 mph on interstates; 70 mph on designated portions of interstates for vehicles with 5 or more axles operating at a gross weight of more than 26,000 pounds; 65 mph on interstates for vehicles with 5 or more axles operating at a gross weight of more than 26,000 pounds; 70 mph or less on state highways.
Illinois	70 mph on rural interstates; 65 mph on 4-lane divided highways; 55 mph on all highways (or as posted); 60 mph (or as posted) for a second division vehicle designed or used for the carrying of a gross weight of 8,001 pounds of more (including the weight of the vehicle and maximum load) outside an urban area in Cook, DuPage, Kane, Lake, McHenry, and Will counties.
Indiana	70 mph on interstates and certain state highways if the vehicle has a declared gross weight of 26,000 pounds or less; 65 mph on interstates and certain state highways if the vehicle has a declared gross weight of more than 26,000 pounds; 60 mph on selected, divided highways.
Iowa	70 mph on interstate roads; 65 mph on fully controlled-access, divided, multi-laned highways; 55 mph on other highways.
Kansas	75 mph on rural interstates; 55 mph to 65 mph on other highways.
Kentucky	70 mph on selected interstate highways and parkways; 65 mph on interstate highways and parkways; 55 mph on all other state highways; 35 mph at all times in business and residential districts.
Louisiana	70 mph on non-urban interstate; 55 to 60 mph other highways.
Maine	75 mph on interstates and other divided controlled-access highways; 60 mph (or as posted) on other highways.
Maryland	70 mph on most rural interstates; 50 mph to 55 mph on other highways.
Massachusetts	65 mph on designated highways; 55 mph or less on other highways.
Michigan	65 mph for a truck with a gross weight of 10,000 pounds or more, a truck-tractor, truck-tractor with a semi-trailer or trailer, or combination of these vehicles.
Minnesota	70 mph on rural interstates; 55 mph to 65 mph on other highways.
Mississippi	70 mph on rural interstates; 65 mph on 4-lane highways; 55 mph on all other highways.
Missouri	70 mph on rural interstates; 65 mph on rural expressways; 60 mph on urban interstates; 55 mph on state highways.
Montana	Straight trucks or truck-tractors with single/double trailers over one ton manufacturer's rated capacity are limited to: 70 mph on rural interstates; 65 mph on other highways.
Nebraska	75 mph on rural interstates; 70 mph on state highway system freeways and expressways; 65 mph on most other 2-lane highways.
Nevada	55 mph to 80 mph.
New Hampshire	70 mph on I-93 from mile marker 45 to the Vermont border; 65 mph on rural interstates; 55 mph elsewhere.
New Jersey	65 mph on designated interstates; 55 mph on designated state highways and all interstates.
New Mexico	75 mph on rural interstates.
New York	65 mph on designated roadways; 55 mph elsewhere.
North Carolina	70 mph on rural interstates; 55 mph to 65 mph on non-interstate highways with controlled access.
North Dakota	75 mph on interstate highways; 70 mph on multi-lane divided highways; 65 mph on paved 2-lane highways
Ohio	70 mph on Ohio Turnpike and certain sections of interstate highways (as posted)
Oklahoma	75 mph on turnpikes; 70 mph on rural interstates; 65 mph on state highways.
Oregon	65 mph.
Pennsylvania	70 mph on rural interstates and expressways (as posted); 55 mph on other highways.
Rhode Island	65 mph on rural interstates; 55 mph on other highways.
South Carolina	70 mph on rural interstates; 65 mph on 4-lane roads; 55 mph on all other highways.
South Dakota	80 mph on designated rural interstates; 70 mph on select 4-lane highways; 65 mph on other main highways.
Tennessee	70 mph on rural interstates; 55 mph on urban interstates and non-interstate highways.
Texas	75-85 mph on specified segments of highway (when posted) outside an urban area. 70 mph outside an urban area.
Utah	75 mph to 80 mph on rural interstates; 65 mph on other highways.
Vermont	65 mph on rural interstates; 55 mph on selected urban interstates; 50 mph on all other highways.
Virginia	70 mph on certain rural interstates; 55 mph day or night on all other highways.
Washington	60 mph on rural interstates for all vehicles over 10,000 pounds gross weight and vehicles in combination (excluding auto stages); 55-60 mph day or night on all other highways.
West Virginia	70 mph on rural interstates; 55 mph on primary highways.
Wisconsin	70 mph on interstates, freeways, and expressways (where posted); 65 mph on expressways; 55 mph on two-lane highways
Wyoming	80 mph on rural interstates; 75 mph on rural interstates; 65 mph on 2-lane highways.

['CMV driving']

['Speed limits']

...

Speed limits - maximum for commercial motor vehicles state comparison

State comparison