This file and its description are from Wikimedia Commons.
Summary
DescriptionMUTCD CW20-8.svg
English: 18 by 18 inches (457.2 mm × 457.2 mm) sign W20-8 “Slow” (on Stop/Slow Paddle) for temporary traffic control zones from the Manual of Uniform Traffic Control Devices.
Any traffic control device design or application provision contained in this Manual shall be considered to be in the public domain. Traffic control devices contained in this Manual shall not be protected by a patent, trademark, or copyright, except for the Interstate Shield and any other items owned by FHWA.
Captions
sign W20-8 “Slow” for temporary traffic control zones from the Manual on Uniform Traffic Control Devices