The driver of the vehicle in front has extended their arm and started moving it up and down with short, quick movements. What are they indicating?
Signage: Traffic officers
Explanation
Manual Signal for Reducing Speed
- Gesture: **arm extended** out the window, moving it **up and down** with **short and quick movements**.
- Meaning: the driver **is going to reduce speed**.
- Purpose: **to warn the vehicles following**, especially when the **brake lights** are not clearly visible or cannot be used.
- Safety: allows the **anticipation** of the maneuver and **prevents collisions**.
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