Motorists are inundated with roadside signs while driving. These can include speed limit signs, construction warnings, directions to prominent landmarks, and safety warnings (e.g., “Icy Road ...

Funny Safety Signs Have No Place on Highways They probably don’t work, and they divert resources from things that do. By David Zipper. Jan 23, 2024 5:50 AM. Photo illustration by Slate.

The Boulder Police Department is investigating 14 illegally placed signs with explicit traffic safety messages like “DON’T KILL ANY KIDS TODAY” and “SLOW THE F— DOWN.” ...

The answer to why the signs were disallowed might be in the 31-paragraph ruling about “Uses of, and Nonstandard Syntax on Changeable Message Signs” issued on Jan. 4, 2021 by the U.S. DOT and FHWA.