What does a traffic officer standing at an intersection with one arm raised vertically indicate?
Signage: Traffic officers
Explanation
Arm of the officer raised vertically: mandatory stop
- The officer orders all users approaching the intersection to **stop**.
- Exception: if you cannot stop **safely enough** (e.g., dangerous sudden braking), proceed with **maximum caution**.
- If you are already within the intersection, **clear it** and then stop.
- Stop before the **stop line**, the **pedestrian crossing**, or, failing that, before the intersection.
- Resume driving only when the officer **changes the signal**.
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