National Academies of Sciences%2c Engineering%2c and Medicine

Changeable Message Sign Displays During Non-Incident, Non-Roadwork Periods

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...
Arkansas Democrat-Gazette

Federal highway agency wants states to slow down their use of funny traffic messages

Humorous messages posted on digital highway signs -- commonly known as changeable message signs -- have become almost ubiquitous in recent years, to the point that the Federal Highway Administration ...
Sacramento Bee

What’s with the ‘giant message center poles’ just off CA Highway 50? Are they a hazard?

A Caltrans electronic highway sign on Highway 50 in Sacramento on Saturday, March 14, 2020, encourages people to avoid gatherings as a way to contain the spread of the coronavirus. Caltrans is using ...