What is the purpose of roadway signs and signals?

• A. To regulate traffic, warn of hazards, and provide directions.
• B. To guide only emergency vehicles.
• C. To display advertisements.
• D. To enforce speed limits by police presence.

Answer: (A)

Roadway signs and signals communicate information that keeps traffic moving safely by delivering three kinds of information: regulatory instructions that tell drivers what they must or must not do, warning signs that alert you to upcoming hazards or changes in conditions, and guidance signs that provide directions, destinations, distances, and lane usage. Traffic signals coordinate when vehicles and pedestrians move through intersections to prevent crashes. These signs and signals use standardized colors, shapes, and symbols so drivers can recognize and understand them quickly, even from a distance. Without them, predictability would vanish and intersections would become chaotic. They aren’t just for emergency vehicles, they aren’t advertisements, and while police enforcement may accompany traffic rules, the signs themselves don’t enforce speed—they convey the rules that enforcement can later check.