It is obligatory to assign an escorting vehicle to commercial vehicles carrying oversize freight with a width that exceeds:

1. 3 meters.
2. 20 cm from each side of the vehicle’s freight trunk.
3. 2.5 meters.
4. Correct answer: 3.40 meters.

WhyOversize freight wider than 3.40 m must travel with an escort vehicle. Up to that width a sign is enough.