Regulatory signs are typically white or red and denote essential information regarding traffic flow, speed and parking.
Warning signs are typically yellow. These signs warn motorists of upcoming road conditions such as steep inclines, sharp curves, railroads and dead ends.
Temporary signs are orange. They advise drivers about unusual conditions such as upcoming road construction and unusually slow traffic.
Emergency signs, like regulatory signs, are white but serve a different purpose. These often tell drivers where they can find emergency services, such as shelter during a disaster.
Traffic signals are not used at just stoplights. They also regulate lane direction and foot traffic, warn drivers of upcoming conditions and inform them of fire stations.
