Driver's License Test Prep
Yellow diamond with black border containing a smooth S-curve black arrow that bends first to the left and then to the right, ending with the arrowhead pointing up.
MUTCD
W1-4L
Category
warning
Color
yellow
Shape
diamond
National · MUTCD Sign Reference

Reverse Curve Left

Warns of two curves in opposite directions, the first curving left, with little tangent road between them.

Posted ahead of a pair of curves that bend in opposite directions with little straight roadway between them, the first curving to the left and the second back to the right. Drivers should reduce speed before the first curve because there is not enough recovery distance to brake between bends. Used in place of two separate W1-2 curve warnings.

In the same family

Related signs

Yellow diamond with black border containing a thick black arrow that travels up and bends ninety degrees to point left.
Turn Left
Yellow diamond with black border containing a thick black arrow that travels up and bends ninety degrees to point right.
Turn Right
Yellow diamond with black border containing a thick black arrow that sweeps in a smooth curve from lower right up to the upper left.
Curve Left
Yellow diamond with black border containing a thick black arrow that sweeps in a smooth curve from lower left up to the upper right.
Curve Right
Yellow diamond with black border showing a black curving arrow sweeping up and to the left, with the numerals 35 below it.
Curve Left With Advisory Speed
Source

Wikimedia Commons: File:MUTCD W1-4L.svg (Public domain)

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