Where will an escort vehicle accompanying a vehicle transporting an oversized load travel?

1. AThe escort vehicle will always travel ahead of the vehicle transporting the oversized load.
2. BThe position of the escort vehicle depends on the width of the load and does not depend on the type of road.
3. COn a one-way roadway the escort vehicle will travel in front; and on a two-way roadway - behind it.
4. DOn a two-way roadway - ahead of the vehicle transporting the oversized load; and on a one-way roadway - behind it.

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