What is the main purpose of traffic signs?

The main purpose of traffic signs is to regulate, warn, and guide drivers, which is accurately captured in the chosen answer. Traffic signs provide vital information that helps maintain order on the road, ensuring that drivers can make informed decisions while navigating various driving conditions.

Regulatory signs, such as stop and yield signs, direct drivers to follow specific rules and laws. Warning signs alert drivers to potential hazards or changes in road conditions, like curves or construction zones. Guide signs provide information about destinations, directions, distances, and locations of services. This systematic approach contributes to road safety and efficient traffic flow.

Other options such as informing drivers about vehicle models, promoting vehicle sales, or entertaining drivers do not align with the primary functions of traffic signs. Traffic signs are specifically designed for facilitating safe and efficient travel rather than for commercial or entertainment purposes. This focus on regulation, warning, and guidance underscores their critical role in road safety.