Final answer:
Road signs such as traffic signals and hazard signs warn drivers to slow down and proceed with caution. These signs are essential for maintaining safety on roads. Ignoring them can lead to dangerous situations.
Step-by-step explanation:
What sign warns you that you must slow down? On the road, there are various signs to indicate that drivers must reduce their speed. For example, a traffic signal at intersections ensures that vehicles slow down rather than speeding through. Ignoring such signs can lead to dangerous situations and even collisions. Apart from traffic lights, hazard signs also alert drivers to potential risks on the road, requiring them to slow down and proceed with caution. Understanding these signs is crucial for road safety.
Furthermore, signs such as "no diving" warn of potential dangers in non-driving contexts, like swimming areas, indicating that the water is too shallow for diving and cautioning people to slow down or stop what they are doing to prevent injury.