Often, a detour sign is temporary until road work is completed and is marked by a portable electronic sign, while other times it is used for the long term.

Solar powered traffic signs, such as those manufactured by TraffiCalm, provide cleaner renewable energy, cut costs, and can save taxpayers money.

A dolly mounted sign is effective for many situations, as it can monitor speed limits, protect schools and neighborhoods, and be moved around easily.

ADA signs help disabled individuals get around in public places and must meet federal requirements, which can result in severe penalties if they don't.