When does the transport of high freight require the approval of a “police officer”?

1. In a commercial vehicle with an all up weight of up to 15,000 kg, when the height of the freight is more than 4 meters above ground.
2. In a commercial vehicle weighing more than 4,000 kg.
3. Correct answer: In a commercial vehicle with an all up weight of more than 15,000 kg, when the height of the freight is more than 4.80 meters above ground.
4. In a vehicle weighing 1.5 tons, when the height of the freight is more than 2.50 meters.

WhyPolice approval is needed if a vehicle over 15,000 kg carries freight higher than 4.80 m above the ground.