“The new changeable message signs will allow Caltrans to display reliable, real-time travel and traffic safety information using high-resolution color text and images during both day- and night ...

The signs should be used for guidance and traffic information that will impact travel down the State Highway System, according to the Changeable Message Signs Guidelines handbook.

In the chapter on changeable message signs (CMS), which is the category that overhead electronic highway signs fall under, the federal agency strongly recommends against the use of messages with ...

In the chapter on changeable message signs (CMS), which is the category that overhead electronic highway signs fall under, the federal agency strongly recommends against the use of messages with ...