A square or lane traffic light must be obeyed by…
Signage: Traffic lights
Explanation
Lane traffic lights: who must obey them
- A square or lane traffic light affects only the vehicles traveling in the **lane** over which it is installed. Those in other lanes are not obligated by its signal.
- Usual meanings:
- **Red in cross (X)**: **prohibited** to use that lane.
- **Green in vertical arrow**: lane **open**; you may proceed.
- **White or yellow in side arrow**: **mandatory change** to the lane indicated by the arrow.
Key idea: the order is **lane-specific**, not for the entire roadway.
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