1. Traffic lights are arranged horizontally: red light left, yellow light middle, green light right.
2. The traffic lights are arranged horizontally: red light, yellow light to the left and green light.
3. Vertical arrangement of traffic lights: red light, yellow light to the left, green light.
4. Vertical traffic lights: red light on the right, yellow light and green light on the left.
Traffic lights consist of red light, green light and yellow light. Red light means no traffic, green light means permission, and yellow light means warning.