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Driving Farm Equipment on Roads

Slow farm equipment shares public roads with much faster traffic, and many crashes happen when drivers misjudge the speed difference. Planning a trip well gives everyone more time to react.

What makes farm equipment risky on public roads?

Farm machines travel slowly, are often wide, and may stop or turn without warning. Other drivers may come up quickly over a hill or around a curve and not realize how slow the machine is until it is close.

Dust, glare, weather and distraction can all shorten the time a following driver has to react.

Newer drivers and visitors from towns may not know how to judge the speed of a slow machine. That is one reason why markings, lights and a predictable driving style are so useful.

What rules apply to me?

Road rules for farm equipment, including lighting, markings, width, speed and driver requirements, vary by state and sometimes by county. I am not stating specific limits here because they differ and change.

Confirm what applies with your state department of transportation, state highway patrol or county sheriff, and your state agriculture department or extension office.

Rules can also differ for different types of equipment, such as tractors, self-propelled machines and towed implements. Ask the official agency about each type you move, and keep any written guidance you receive in the cab.

How do I prepare a machine before a road trip?

Check lights, flashers, mirrors, brakes, tires, hitch pins and safety chains. Clean the slow-moving vehicle emblem and reflective surfaces so they can be seen. Secure loose parts and make sure towed units are properly connected.

Follow the manufacturer's guidance for transport positions. Fold, lower or lock attachments the way the manual describes.

Photograph your equipment in its transport position and review it before the season, so that you and your drivers know what a correct setup looks like. If something looks wrong, fix it before the trip.

• Test lights and flashers
• Clean emblem and reflectors
• Check hitch, pins and safety chains
• Secure implements in the transport position

How should I plan the route?

Choose roads that you know well and avoid busy hours, school bus times and narrow bridges when you can. Look for places to pull over safely if traffic builds up.

Think about the equipment's width and height against bridges, wires, signs and mailboxes. Drive the route ahead of time if you can.

Allow extra time for the trip so you are never tempted to hurry. Time pressure changes how people drive, and a delay of a few minutes costs far less than a mistake at an intersection.

• Know the width and height of your equipment
• Look for narrow bridges and overhead wires
• Avoid school bus and peak traffic times

How do I drive safely once I am out there?

Stay as far right as is safe, use your signals early and avoid sudden moves. Check mirrors often, since following drivers may try to pass at the worst moment.

Pull over when it is safe to let a line of traffic go by, and wave when you do. Stay patient and never rush a turn or crossing because someone is behind you.

If your view to the rear is limited, ask whether mirrors can be upgraded, and use them every few seconds. Never assume that a car behind you has seen your signal or understood what you are about to do.

• Signal early
• Stay patient with following traffic
• Pull over safely when you can

Who should be trained to drive on roads?

Anyone who drives farm equipment on public roads needs training for that task, not just for field work. Youth work rules vary, and the U.S. Department of Labor and your state labor agency set limits, so confirm there before assigning a young person.

Walk new drivers through the route, the equipment and what to do if something goes wrong. Keep a phone or radio on board, and call 911 in an emergency.

If you are unsure whether a young worker may legally operate equipment on a road, ask first. The U.S. Department of Labor Wage and Hour Division and your state labor office can explain how rules apply to your situation.

What should I do about fatigue and distraction?

Long days in harvest or planting season make drivers tired, and tired drivers react slowly. Take breaks, drink water, eat regularly and share driving where you can. If you feel drowsy, stop in a safe place.

Keep the phone out of reach while the machine is moving. If you must make a call, pull over first. Set the radio and any guidance screens before you leave the yard.

Last reviewed: November 12, 2026. Written by the Farm Safety Editorial Team. See our editorial policy.