Driver's License Test Prep
Square green panel with white text reading PASSING LANE 1/2 MILE.
MUTCD
D17-4
Category
guide
Color
green
Shape
square
National · MUTCD Sign Reference

Passing Lane Distance

A passing lane begins in one-half mile.

Closer-range advance notice that a passing lane is about to begin. Slower vehicles should plan to keep right when the added lane appears so faster traffic can overtake without crossing into the oncoming lane.

In the same family

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Source

Wikimedia Commons: File:MUTCD D17-4.svg (Public domain)

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