Slow Moving Vehicle Sign: Meaning and What to Do
The orange rectangle reading SLOW MOVING VEHICLE is a temporary traffic control sign, mounted on or ahead of a slow work vehicle such as a striping truck, sweeper, or mowing tractor working in or beside the travel lanes. It warns that the vehicle ahead is moving far below traffic speed.
Slow Moving Vehicle Sign
It is a different thing from the slow-moving vehicle emblem, the orange triangle with a red border carried on the back of farm equipment and horse-drawn vehicles. The emblem identifies a vehicle that travels slowly by design; this sign announces a work operation on the road.
What to do when you see the slow moving vehicle sign
Slow down early, keep a generous following distance, and pass only where the sign or a flagger indicates it is safe and the road allows it. Expect the vehicle to stop, back up, or drift across the lane line without warning. If it is a striping truck, do not cross fresh paint.
The signs it is confused with
Tests contrast it with the triangular slow-moving vehicle emblem on farm equipment and with the Road Work Ahead diamond. Orange rectangle with words means a temporary work operation; the orange triangle is the vehicle's own marking.
Signs are one topic of ten on every test
Every state practice test covers signs, signals, and markings among its ten topics, with every answer explained. Pick your state and see how its exam asks about signs like this one; it is free, with no sign-up.
Choose your stateQuestions about the slow moving vehicle sign
What does the slow moving vehicle sign mean?
A work vehicle ahead is moving much slower than traffic. Slow down, keep back, and pass only where it is safe and permitted.
Is it the same as the orange triangle on tractors?
No. The triangle is an emblem carried by slow vehicles like farm equipment. This orange rectangle is a work zone sign for a road operation.
What should I expect from the vehicle ahead?
Sudden stops, reversing, and lane changes. Mowers throw debris and striping trucks leave wet paint, so keep your distance.
May I pass a slow moving work vehicle?
Where passing is legal and a flagger or sign does not forbid it, yes, with care. Never pass on the side where the work is being done.
How does this sign appear on the written test?
As an orange-sign recognition item and in sharing-the-road questions that also mention the triangular emblem.