Traffic signs convey messages to drivers about laws, hazards, and guidance. Standard signs use specific colors and shapes, like red octagons for stop signs. Signs are classified as regulatory, warning, or guide signs. Traffic signals use colors like red, yellow, and green to control traffic flow and right of way. Roadway markings include lines and arrows in colors like white and yellow to guide drivers. Danger warning signs warn of hazards ahead with equilateral triangle shapes. Regulatory signs inform drivers of obligations and prohibitions. Informative signs provide guidance and information to drivers about places like gas stations, workshops, and hotels. Courteous driving involves consideration for passengers and other drivers through behaviors like using turn signals and giving right of way