How Fast Can You Drive With a Trailer? State Laws for Trailer Towing Speed

Most people tow at whatever the sign says and never think about it. Usually that's fine. But "how fast can you drive with a trailer" has two answers, and they're not always the same: how fast the law lets you, and how fast is actually safe. In some states those match the posted limit. In others, the legal towing speed is well below it, and in almost every state the smart speed is lower than the fastest legal one.

Speed is the single biggest thing you control when towing. It drives how far you need to stop, how likely the trailer is to start swaying, and whether your tires can take the heat. So it's worth knowing all three: the state laws, the safe speed regardless of the law, and what speed does to your stopping distance.

Please note: this is general information, not legal advice. Towing speed laws change and published sources often disagree, so confirm the current rule with your state's transportation department, watch the posted signs, and check every state you'll tow through.

How Towing Speed Limits Work

In most states there's no separate towing speed limit, so your truck and trailer follow the same posted limit as everyone else, commonly 65 to 75 mph on interstates. But a number of states, concentrated in the West and Midwest, post a lower limit specifically for vehicles towing trailers or for combinations over a certain weight, usually 5 to 15 mph below the standard limit. The takeaway is simple: don't assume the posted number is yours when you're towing, because in some states it isn't.

California is the one everyone runs into. It caps any vehicle towing a trailer at 55 mph, statewide, even on freeways posted at 70, under California Vehicle Code §22406, and it's enforced. It's the strictest and best known, but it isn't the only one, which is why the state section below matters. And the rules change at the state line, so a speed that's legal at home can be illegal one state over. Read more about whether you need a special license to tow a trailer, state by state, since the same cross-state logic applies to licensing.

The Safe Speed, Regardless of the Limit

Here's the part that matters even where the law is generous: your trailer tires have a speed limit of their own. Standard ST (Special Trailer) tires carry a speed rating of 65 mph under the tire industry's standards, so many trailer tires top out at 65 mph no matter how fast your truck can go. Some newer ST tires are rated higher, 75 or 81 mph, but only if the sidewall says so, so check your tires rather than guessing.

Why it matters: going faster than the tire's rating builds heat inside the tire faster than it can shed it, and heat is what causes blowouts. Tire failure is a leading cause of trailer-related highway incidents, and speed is the biggest factor you control. Even where the law allows 70 or 75, a standard 65-mph trailer tire doesn't care what the sign says.

Speed drives sway, too. Trailer sway tends to start above 60 to 65 mph, especially with bumper-pull trailers or a load that's off balance, and the faster you go, the harder any disturbance, a gust or a passing semi, is to settle. Dropping a few miles an hour often turns a scary wobble into a non-event. Proper loading matters as much as speed here, so read more about how to load a trailer. For most rigs, 55 to 65 mph is the safe towing zone even where the law allows more, and slower still on grades, in wind or in heat.

Why Stopping Takes Longer

A loaded trailer adds a lot of weight behind you, and all that mass has to be stopped, so a truck and trailer need considerably more room to stop than the truck alone. Trailer brakes help, but they don't erase the difference.

Speed makes it worse, and not in a straight line. Stopping distance rises sharply with speed, because the energy you have to shed goes up with the square of your speed, so going from 55 to 70 adds far more stopping distance than it feels like it should. Combine more weight and more speed and your safe following distance grows a lot.

So drive for it. Leave much more following distance than you would without a trailer, look far enough ahead to brake early and smoothly, and slow down before downhill grades so you're not riding the brakes and overheating them. Braking early and gently beats braking hard and late every time you're towing.

Reading This Guide

The states below are grouped by region, the same way as our licensing guide, so you can find yours fast. For each, you'll find whether the posted limit generally applies or the state sets a lower towing limit, with an official source where we can point you to one.

One honest caveat: towing speed laws change, the fine print varies by road class and trailer weight, and even widely published charts disagree with each other and with the statutes. We've cited official state law where we've confirmed it and flagged where a state is commonly reported to differ. Everywhere else, treat the posted limit as the starting point, watch the signs, and confirm the current rule with the state's transportation department. On a trip, the most restrictive towing rule on your route is the one that governs. This is general information, not legal advice.

New England

Maine

The posted limit generally applies to towing. Watch for any posted truck or trailer limits and confirm with the Maine Department of Transportation.

New Hampshire

The posted limit generally applies to towing. Confirm the current rule with the New Hampshire Department of Transportation and watch the signs.

Vermont

The posted limit generally applies to towing. Confirm with the Vermont Agency of Transportation and DMV.

Massachusetts

The posted limit generally applies, though trailers are restricted on many Boston-area parkways. Confirm with MassDOT and the RMV.

Rhode Island

The posted limit generally applies to towing. Confirm with the Rhode Island DOT and DMV.

Connecticut

The posted limit generally applies to towing. Confirm with the Connecticut DOT and DMV.

The Mid-Atlantic

New York

The posted limit generally applies to towing, though trailers are barred from many parkways due to low overpasses. Confirm with the New York State DOT and DMV.

New Jersey

The posted limit generally applies to towing. Confirm with the New Jersey DOT and MVC.

Pennsylvania

The posted limit generally applies, with a lower cap on some tollways. Confirm the current rule with PennDOT and watch the posted signs.

Delaware

The posted limit generally applies to towing. Confirm with DelDOT and the DMV.

Maryland

The posted limit generally applies to towing. Confirm with the Maryland DOT and MVA.

Washington, D.C.

The posted limit generally applies to towing. Confirm with the District DOT and DMV.

The Southeast

Virginia

The posted limit generally applies to towing. Confirm with the Virginia DOT and DMV.

West Virginia

The posted limit generally applies to towing. Confirm with the West Virginia DOT and DMV.

North Carolina

The posted limit generally applies to towing. Confirm with the North Carolina DOT and DMV.

South Carolina

The posted limit generally applies to towing. Confirm with the South Carolina DOT and DMV.

Georgia

The posted limit generally applies to towing, commonly up to 65 or 70 where posted. Confirm with the Georgia DOT and Department of Driver Services.

Florida

The posted limit generally applies to towing per the state driver handbook. Confirm with the Florida DOT and FLHSMV.

Kentucky

The posted limit generally applies to towing. Confirm with the Kentucky Transportation Cabinet.

Tennessee

The posted limit generally applies to towing. Confirm with the Tennessee DOT and Department of Safety.

Alabama

The posted limit generally applies to towing. Confirm with the Alabama DOT and Law Enforcement Agency.

Mississippi

The posted limit generally applies to towing. Confirm with the Mississippi DOT and Department of Public Safety.

The Great Lakes

Ohio

The posted limit generally applies to towing. Confirm with the Ohio DOT and BMV.

Indiana

Indiana is commonly reported to hold trailer combinations to a lower limit than passenger cars on some highways, so don't assume a 70-mph sign applies to your rig. Confirm the current rule with the Indiana DOT and BMV and watch the posted signs.

Illinois

Illinois is commonly reported to apply a reduced limit to trailers and recreational vehicles on some roads, with the details varying, so verify before you rely on the posted number. Confirm with the Illinois DOT and State Police.

Michigan

Michigan is commonly reported to post a lower speed for vehicles with trailers on some non-interstate routes, and the rule varies by road classification. Confirm the current rule with the Michigan DOT and Secretary of State and watch the signs.

Wisconsin

The posted limit generally applies to towing. Confirm with the Wisconsin DOT.

The Plains

Minnesota

The posted limit generally applies to towing. Confirm with the Minnesota DOT and DVS.

Iowa

The posted limit generally applies to towing. Confirm with the Iowa DOT.

Missouri

The posted limit generally applies to towing. Confirm with the Missouri DOT and Department of Revenue.

North Dakota

The posted limit generally applies to towing. Confirm with the North Dakota DOT.

South Dakota

The posted limit generally applies to towing. Confirm with the South Dakota DOT and Department of Public Safety.

Nebraska

The posted limit generally applies to towing. Confirm with the Nebraska DOT and DMV.

Kansas

The posted limit generally applies to towing. Confirm with the Kansas DOT and Department of Revenue.

The South Central States

Texas

The posted limit generally applies to towing, which can reach 75 on some rural interstates, though some sources note lower night or heavy-trailer figures, so confirm the current rule with the Texas DOT and DPS and watch the signs.

Oklahoma

The posted limit generally applies to towing. Confirm with the Oklahoma DOT and Service Oklahoma.

Arkansas

The posted limit generally applies to towing. Confirm with the Arkansas DOT and Department of Finance and Administration.

Louisiana

The posted limit generally applies to towing, with some lower figures reported for house trailers. Confirm with the Louisiana DOTD and Office of Motor Vehicles.

The Mountain West

Montana

Montana tends to apply a uniform or posted limit to towing. Confirm the current figure with the Montana DOT and Motor Vehicle Division.

Idaho

Idaho is commonly reported to apply situational reductions for trucks and combinations on some highways, so watch for posted truck or trailer limits and confirm with the Idaho Transportation Department.

Wyoming

Wyoming tends to apply a uniform or posted limit to towing. Confirm the current figure with the Wyoming DOT.

Colorado

The posted limit generally applies to towing. Confirm with the Colorado DOT and DMV.

Utah

The posted limit generally applies to towing. Confirm with the Utah DOT and Driver License Division.

Nevada

Nevada tends to apply a uniform or posted limit to towing. Confirm the current figure with the Nevada DOT and DMV.

Arizona

The posted limit generally applies to towing, commonly up to 65 or 75 where posted. Confirm with the Arizona DOT and MVD.

New Mexico

The posted limit generally applies to towing. Confirm with the New Mexico DOT and MVD.

The Pacific States

California

California is the one to know. Under California Vehicle Code §22406, any vehicle towing a trailer is capped at 55 mph statewide, even on freeways posted at 70, and it's actively enforced. The state's driver handbook says the same: unless otherwise posted, the maximum is 55 mph for vehicles towing trailers. Plan for 55 the moment you cross into California with a trailer.

Oregon

Oregon posts lower limits for trucks on much of its interstate system, and reduced limits can apply to heavier trailer combinations on some roads, so the picture depends on your rig and route. Confirm the current rule with the Oregon DOT and DMV and watch the posted truck and trailer signs.

Washington

Washington caps vehicles over 10,000 pounds and vehicles in combination at 60 mph, even where the posted limit is higher, under RCW 46.61.410. If you're towing a trailer on a freeway signed for 70, you're still held to 60, and the State Patrol enforces it, so plan for 60 in Washington.

Alaska

The posted limit generally applies to towing. Confirm with the Alaska DOT and Public Facilities and the DMV.

Hawaii

The posted limit generally applies to towing. Confirm with the Hawaii DOT and your county driver licensing office.

A Few Things That Trip People Up

On a trip, the strictest rule wins. When you cross state lines, you have to follow each state's towing rule as you enter it, so plan for the lowest towing speed on your whole route, not just your home state's. A rig that's legal at 70 in Arizona drops to 55 the moment it crosses into California.

Your rental agreement may set its own limit. Rental agreements sometimes cap your speed below the legal limit for insurance and liability reasons, so check the terms before you assume the state law is the only ceiling.

Conditions lower the safe speed further. Wind, rain, steep grades and summer heat all push your safe speed below the legal one, so back off in bad conditions and on long climbs and descents. And match the tire to your habits: if you regularly need to tow at highway speeds, check whether your trailer has standard 65-mph tires or higher-rated ones, and don't outrun the tires you've got.

When in doubt, slow down. Slower towing costs you a few minutes and buys you stopping distance, sway margin and cooler tires, which is a trade worth making every time.

What about insurance and damage protection?

Before towing a rented trailer, contact your auto insurance provider to ask whether your policy covers liability and towing-related damage claims.

Eligible rentals booked through Big Rentals also include Basic Rental Protection at checkout. This added protection can help limit your financial responsibility for certain damage or theft events during the rental period.

For full details on how Basic Rental Protection works, including deductibles, exclusions, and renter responsibilities, review our FAQ and platform terms.

The Short Version

• How fast you can drive with a trailer has two answers, what the law allows and what's actually safe, and they're often not the same
• Most states let you tow at the posted limit, commonly 65 to 75 on interstates, but a number of states, mostly in the West and Midwest, set a lower towing limit
• California is the big one: 55 mph for any vehicle towing a trailer, statewide, even on 70-mph freeways, and Washington caps combinations at 60
• Regardless of the law, standard ST trailer tires are rated for 65 mph, so going faster builds heat and risks a blowout unless your sidewall shows a higher rating
• Trailer sway tends to start above 60 to 65 mph, so for most rigs 55 to 65 is the safe zone, and slower in wind, rain, heat or on grades
• A loaded rig needs much more room to stop, and stopping distance climbs sharply with speed, so leave extra following distance and brake early
• On a trip, follow the strictest towing rule on your route, and check your rental agreement for its own speed limit
• Published charts disagree and laws change, so this is general information, not legal advice, and you should confirm the current rule with each state and watch the posted signs

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