(1) A flag vehicle may be any passenger car or two axle truck a minimum of 60 inches wide. The maximum manufacturer's rating for the flag vehicle shall not exceed 2 tons. A flag vehicle may not exceed legal limits of size and weight. A flag vehicle may pull a trailer or carry any item(s) or equipment or load in or on the flag vehicle which:

(a) does not exceed legal limits of size and weight; and

(b) does not obstruct the view of the flashing lights or signs used by the flag vehicle.

(2) A sign with the words "oversize load" or similar wording shall be visible from the front of the vehicle and rear of the vehicle at all times when piloting an oversize load. Letters shall not be less than 8 inches in height. The letters shall be dark in color on a light colored background.

(3) Flashing amber lights, visible front and rear, a minimum of five inches in diameter, 50 candlepower, 60 to 90 flashes per minute, shall be mounted at each end of a "wide load" sign on the roof of the flag vehicle. A revolving or strobe light may be substituted for flashing lights. Lights shall be flashing at all times when piloting an oversize load.

(4) All flag vehicles shall be equipped with two way radio communication.