Truck Speed Limits by State
The posted limit that actually applies to a loaded commercial truck in every state, whether it is lower than the car limit, and the penalties that bite hardest. Covers all 50 states and DC. Reference only, not legal advice.
What "split limit" means for a truck
In most of the country a loaded truck runs the same posted limit as everyone else. A split limit is where the state posts a lower number for large trucks. 8 states do it, and the size of the gap is what matters. California is the outlier: any truck with three or more axles, or towing, is capped at 55 mph on every highway, even the ones posted 70 for cars (CVC 22406). Oregon and Washington run smaller gaps.
Two things catch drivers out. First, the interstate number is not the whole state. Two-lane US and state highways almost always carry a lower limit than the interstate, and a truck-specific cap can follow you off the freeway. Second, the penalty is not just a fine. A serious speed on your CDL record, even in your own car on a day off, counts toward an FMCSA disqualification, and several states turn a high speed into a criminal charge.
Truck speed limits for all 50 states and DC
Tap a state for the full picture: the interstate limit, the limit on other roads, whether trucks are split from cars, the statute, and the penalties. The Split limit tag means trucks are held below cars somewhere in the state; Same as cars means trucks run the posted limit like any vehicle.
| State | Truck limit (rural interstate) | Car limit | Difference |
|---|---|---|---|
| Alabama AL | 70 mph Same as cars | 70 mph | Same as cars (hazmat vehicles capped at 55) |
| Alaska AK | 65 mph Same as cars | 65 mph | Same as cars. No truck differential. |
| Arizona AZ | 75 mph Same as cars | 75 mph | Same as all vehicles |
| Arkansas AR | 70 mph Split limit | 75 mph | 5 mph lower than cars (70 vs 75) on rural controlled-access highways |
| California CA | 55 mph Split limit | 70 mph | 10 to 15 mph lower than cars (55 vs 65-70) on every road in the state |
| Colorado CO | 75 mph Same as cars | 75 mph | Same as all vehicles |
| Connecticut CT | 65 mph Same as cars | 65 mph | Same as cars. No truck split anywhere in the state. |
| Delaware DE | 65 mph Same as cars | 65 mph | Same as cars (65 mph) |
| District of Columbia DC | n/a Same as cars | n/a (no rural interstates) | Same as cars (55 mph) |
| Florida FL | 70 mph Same as cars | 70 mph | Same as cars — no split |
| Georgia GA | 70 mph Same as cars | 70 mph | Same as cars — no split |
| Hawaii HI | 60 mph Same as cars | 60 mph | Same as cars. No truck differential. |
| Idaho ID | 75 mph Same as cars | 75 mph (80 on posted segments) | Same as cars since July 1, 2026 (previously trucks 70, cars 80) |
| Illinois IL | 70 mph statewide, but 60 mph in the 6 Chicago collar counties Split limit | 70 mph | 10 mph lower than cars (60 vs 70), but only in the 6 Chicago collar counties; matches cars everywhere else |
| Indiana IN | 65 mph Split limit | 70 mph | 5 mph lower than cars (65 vs 70) on rural interstates |
| Iowa IA | 70 mph Same as cars | 70 mph | Same as all vehicles |
| Kansas KS | 75 mph Same as cars | 75 mph | Same as all vehicles |
| Kentucky KY | 70 mph on posted rural interstates and parkways Same as cars | 70 mph on posted rural interstates and parkways (base 65) | Same as cars |
| Louisiana LA | 75 mph on the posted I-49 segment; 70 mph on all other interstates Same as cars | 75 mph on the posted I-49 segment; 70 mph elsewhere | Same as cars |
| Maine ME | 75 mph Same as cars | 75 mph (same segment) | Same as cars. No truck split; the 75 mph zone applies to trucks too. |
| Maryland MD | 70 mph Same as cars | 70 mph | Same as cars (70 mph) |
| Massachusetts MA | 65 mph Same as cars | 65 mph | Same as cars. No truck split. |
| Michigan MI | 65 mph Split limit | 70 mph (75 mph on about 600 miles of specified segments) | 5-10 mph lower than cars (65 vs 70, or 65 vs 75 on the raised segments) |
| Minnesota MN | 70 mph Same as cars | 70 mph | Same as all vehicles |
| Mississippi MS | 70 mph Same as cars | 70 mph | Same as cars |
| Missouri MO | 70 mph Same as cars | 70 mph | Same as cars (no split) |
| Montana MT | 70 mph Split limit | 80 mph | 10 mph lower than cars (70 vs 80) on rural interstates |
| Nebraska NE | 75 mph Same as cars | 75 mph | Same as all vehicles |
| Nevada NV | 80 mph Same as cars | 80 mph | Same as cars. Nevada posts no truck differential. |
| New Hampshire NH | 65 mph Same as cars | 65 mph (70 mph on that I-93 segment) | Same as cars. No truck split; the 70 mph I-93 zone applies to trucks too. |
| New Jersey NJ | 65 mph Same as cars | 65 mph | Same posted limit as cars (65 mph), but the state can sign trucks 10,000 lb+ 5 mph lower on four-lane state highways (N.J.S.A. 39:4-98.1) |
| New Mexico NM | 75 mph Same as cars | 75 mph | Same as all vehicles |
| New York NY | 65 mph Same as cars | 65 mph | Same as cars (65 mph) |
| North Carolina NC | 70 mph Same as cars | 70 mph | Same as cars — no split |
| North Dakota ND | 75 mph Same as cars | 75 mph | Same as all vehicles |
| Ohio OH | 70 mph Same as cars | 70 mph | Same as cars (no split) |
| Oklahoma OK | 75 mph Same as cars | 75 mph (80 on posted rural turnpike segments) | Same as cars |
| Oregon OR | 55 mph Split limit | 65 mph (70 on I-84 east of The Dalles and on US 95) | 10 mph lower than cars (55 vs 65) on most interstates; 5 mph lower (65 vs 70) on the I-84 segment |
| Pennsylvania PA | 70 mph Same as cars | 70 mph | Same as cars (70 mph) |
| Rhode Island RI | 65 mph Same as cars | 65 mph | Same as cars. No truck split. |
| South Carolina SC | 70 mph Same as cars | 70 mph | Same as cars — no split |
| South Dakota SD | 80 mph Same as cars | 80 mph | Same as all vehicles |
| Tennessee TN | 70 mph Same as cars | 70 mph | Same as cars |
| Texas TX | 75 mph Same as cars | 75 mph (80 on specified segments; 85 on SH 130) | Same as cars (Texas dropped its separate truck limit in 2011) |
| Utah UT | 75 mph Same as cars | 75 mph (80 on posted segments) | Same as all vehicles |
| Vermont VT | 65 mph Same as cars | 65 mph | Same as cars. No truck split. |
| Virginia VA | 70 mph Same as cars | 70 mph | Same as cars — no split |
| Washington WA | 60 mph Split limit | 70 mph (75 on posted I-90 segments east of the Cascades) | 10 mph lower than cars (60 vs 70), and up to 15 lower on the 75-mph stretches |
| West Virginia WV | 70 mph Same as cars | 70 mph | Same as cars — no split |
| Wisconsin WI | 70 mph Same as cars | 70 mph | Same as cars (no split) |
| Wyoming WY | 75 mph Same as cars | 75 mph (80 on posted segments) | Same as all vehicles |
Sources: Insurance Institute for Highway Safety (IIHS) maximum posted speed limits; state DOT pages; the cited state vehicle codes. Last reviewed July 2026. Limits change by legislation and by corridor, so confirm the posted sign and the state agency before you rely on a figure.
Where trucks are held below cars
These are the states to watch, because the truck number is lower than the sign a car driver reads. As of mid-2026 that group is Arkansas, California, Illinois, Indiana, Michigan, Montana, Oregon, and Washington. Everywhere else, a truck runs the posted limit. Open a state for the exact split and the roads it applies to.
Truck Speed Limit FAQ
Which states have a lower speed limit for trucks?
What is the fastest a truck can legally go in the US?
Why do some states set a lower limit for trucks?
Does the speed limit change at night for trucks?
Is speeding in a truck worse than in a car?
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