How many lights does a traffic light that controls an intersection usually have?
Signage: Traffic lights
Explanation
Traffic lights that regulate an intersection usually consist of three lights. These lights are:
- **Steady red light**: Indicates that passage is **prohibited**. Vehicles must stop and wait for the light to change.
- **Steady yellow light**: Also prohibits passage, similar to the red light, but allows vehicles that cannot stop for safety reasons to continue.
- **Steady green light**: Allows vehicles to pass and gives them **priority at the intersection**.
These three colors are the most common in intersection traffic lights, and each has a clear and specific meaning to regulate traffic safely and efficiently.
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