When does a vehicle carrying oversize freight require escort?

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When does a vehicle carrying oversize freight require escort?

گزینه‌ها

1. When the vehicle carries hazardous materials.
2. When the width of its freight is more than 3.40 meters.
3. When the vehicle was authorized to carry a heavy load.
4. When the width of its oversize freight is more than 3 meters and its length is more than by 20 meters.