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Trucks Use Right Lane: What It Means & What To Do

Trucks Use Right Lane (R4-5) - rectangle (vertical) white with black/red regulatory sign: Trucks must use the right lane except when passing
MUTCD CodeR4-5
CategoryRegulatory Signs
ShapeRectangle (vertical)
ColorWhite with black/red

What Does the Trucks Use Right Lane Mean?

Trucks must use the right lane except when passing.

About This Sign

This sign requires trucks and other heavy vehicles to travel in the right lane to improve traffic flow and safety.

Where you will see it

This sign is posted on roads with more than one lane in a direction. It applies to trucks and other heavy vehicles, telling them which lane to stay in to keep traffic moving safely.

What to do

  • If you drive a truck, stay in the right lane.
  • Move to another lane only when passing.
  • Return to the right lane once the pass is finished.

A common mistake

Truck drivers sometimes stay in a left lane after they finish passing. The sign allows other lanes only when passing, not for ordinary driving.

What to remember for the test

Remember the exception: trucks use the right lane except when passing. Heavy vehicles are covered, not just the largest trucks.

Other Regulatory Signs

Frequently Asked Questions

What does the Trucks Use Right Lane mean?

Trucks must use the right lane except when passing.

What shape and color is the Trucks Use Right Lane?

The Trucks Use Right Lane uses the Rectangle (vertical) shape and White with black/red coloring.

Practice Road Sign Questions

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