Driver's License Test Prep
Yellow horizontal rectangle plaque with black border and black text reading WHEN FLASHING stacked on two lines.
MUTCD
W16-13P
Category
warning
Color
yellow
Shape
rectangle horizontal
National · MUTCD Sign Reference

When Flashing (Plaque)

The warning or restriction on the sign above applies only while the attached beacon is flashing.

This plaque is mounted below a warning sign equipped with a flashing beacon to indicate that the condition called out (a school zone speed limit, a curve speed advisory, a wildlife crossing, or similar) is in effect only while the beacon is active. When the beacon is dark, the underlying restriction does not apply, although ordinary care is still required.

In the same family

Related signs

Source

FHWA SHSM Interim — W16-13P (https://mutcd.fhwa.dot.gov/shsm_interim/zip_files/w16_13p.zip) (Public domain (FHWA))

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