Paragraph 6 I1

The sign may be attached to the front or rear of a road maintenance vehicle when the vehicle is being used on a road which is subject to maximum speed limit of 30 mph or under.

The sign may be attached to the rear of a road maintenance vehicle immediately ahead of a vehicle displaying the sign provided for at item 10 of the table in Part 6 when the vehicle is being used on a road which is subject to a maximum speed limit of more than 30 mph.

The sign may be attached to the rear of a road maintenance vehicle.

The sign may only be attached to the rear of a vehicle used to escort traffic through road works to indicate that the vehicle should not be overtaken.

The sign may be attached to a vehicle.