Reduced speeds are often posted in roadwork zones. Guidance and Information Signs - Green signs indicate exits, mileage to cities, interstate interchanges, street or route names, and bicycle routes. Motorist Services Signs - Blue signs direct you to services such as phones, gas, food, motels, hospitals and rest areas. Route signs indicate which route you are on. Signals Light signals are used at busy intersections where traffic is heavy.
Signals promote the orderly flow of traffic.
If a traffic signal is out of order, stop as you would for a four-way stop sign. Stop and wait for the light to change. Make a full stop at the stop line, before the crosswalk, or before entering the intersection. After stopping, you may make a right turn when the intersection is clear, if traffic is allowed to travel in that direction. A red arrow means stop.