Driver's License Test Prep
Vertical white rectangle with black border and three lines of black text reading STAY IN LANE.
MUTCD
R4-9
Category
regulatory
Color
white
Shape
rectangle vertical
National · MUTCD Sign Reference

Stay In Lane

Lane changes are prohibited through this section.

Posted where weaving or lane changes would be unsafe (typically through intersections, narrow construction zones, or the approaches to bridges and tunnels) drivers must remain in their current lane until past the restricted area. Pavement markings (often solid white lines) reinforce the restriction.

In the same family

Related signs

Red octagon with white border and the word STOP in large white letters across the center.
Stop
Downward-pointing red triangle with a white interior triangle and the word YIELD in red letters.
Yield
Small red rectangular plaque with white border and the words ALL WAY in white letters.
All Way Plaque
Red circle on a square white background with the words DO NOT ENTER in white above and below a wide white horizontal bar.
Do Not Enter
Horizontal red rectangle with the words WRONG WAY stacked in large white letters.
Wrong Way
Source

Wikimedia Commons: File:MUTCD R4-9.svg (Public domain)

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