Final answer:
Yellow or Green signs on the road are used to prepare drivers for specific road conditions, hazards ahead, and to alert drivers to nearby school zones. Drivers should understand and obey these signs to prevent accidents and ensure the smooth flow of traffic.
Step-by-step explanation:
Yellow or Green signs on the road are used to prepare drivers for specific road conditions, hazards ahead, and to alert drivers to nearby school zones. These signs are part of the traffic control system that helps ensure the safety of drivers and pedestrians on the road.
For example, a yellow sign with a curve arrow indicates that there is a curve in the road ahead, while a green sign with a picture of a school bus indicates that there is a school zone nearby.
It is important for drivers to understand and obey these signs to prevent accidents and ensure the smooth flow of traffic.