[Code of Federal Regulations]
[Title 49, Volume 4]
[Revised as of October 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR393.17]

[Page 1095-1098]
 
                        TITLE 49--TRANSPORTATION
 
        CHAPTER III--FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION,
                      DEPARTMENT OF TRANSPORTATION
 
PART 393--PARTS AND ACCESSORIES NECESSARY FOR SAFE OPERATION--Table of Contents
 
    Subpart B--Lighting Devices, Reflectors, and Electrical Equipment
 
Sec. 393.17  Lamps and reflectors--combinations in driveaway-towaway operation.

    A combination of motor vehicles engaged in driveaway-towaway 
operation must be equipped with operative lamps and reflectors 
conforming to the rules in this section.
    (a) The towing vehicle must be equipped as follows:
    (1) On the front, there must be at least two headlamps, an equal 
number at each side, two turn signals, one at each side, and two 
clearance lamps, one at each side.
    (2) On each side, there must be at least one side-marker lamp, 
located near the front of the vehicle.
    (3) On the rear, there must be at least two tail lamps, one at each 
side, and two stop lamps, one at each side.
    (b) Except as provided in paragraph (c) of this section, the 
rearmost towed vehicle of the combination (including the towed vehicle 
or a tow-bar combination, the towed vehicle of a single saddle-mount 
combination, and the rearmost towed vehicle of a double or triple 
saddle-mount combination) or, in the case of a vehicle full-mounted on a 
saddle-mount vehicle, either the full-mounted vehicle or the rearmost 
saddle-mounted vehicle must be equipped as follows:
    (1) On each side, there must be at least one side-marker lamp, 
located near the rear of the vehicle.
    (2) On the rear, there must be at least two tail lamps, two stop 
lamps, two turn signals, two clearance lamps, and two reflectors, one of 
each type at each side. In addition, if any vehicle in the combination 
is 80 inches or more in overall width, there must be three 
identification lamps on the rear.
    (c) If the towed vehicle in a combination is a mobile structure 
trailer, it must be equipped in accordance with the following lighting 
devices. For the purposes of this part, mobile structure trailer means a 
trailer that has a roof and walls, is at least 10 feet wide, and can be 
used off road for dwelling or commercial purposes.
    (1) When the vehicle is operated in accordance with the terms of a 
special permit prohibiting operation during the times when lighted lamps 
are required under Sec. 392.30, it must have on the rear--
    (i) Two stop lamps, one on each side of the vertical centerline, at 
the same height, and as far apart as practicable;
    (ii) Two tail lamps, one on each side of the vertical centerline, at 
the same height, and as far apart as practicable;

[[Page 1096]]

    (iii) Two red reflex reflectors, one on each side of the vertical 
centerline, at the same height, and as far apart as practicable; and
    (iv) Two turn signal lamps, one on each side of the vertical 
centerline, at the same height, and as far apart as practicable.
    (2) At all other times, the vehicle must be equipped as specified in 
paragraph (b) of this section.
    (d) An intermediate towed vehicle in a combination consisting of 
more than two vehicles (including the first saddle-mounted vehicle of a 
double saddle-mount combination and the first and second saddle-mount 
vehicles of a triple saddle-mount combination) must have one side-marker 
lamp on each side, located near the rear of the vehicle.

[[Page 1097]]

[GRAPHIC] [TIFF OMITTED] TC01AP91.026


[[Page 1098]]


[GRAPHIC] [TIFF OMITTED] TC01AP91.027


(49 U.S.C. 304, 1655; 49 CFR 1.48(b) and 301.60)

[40 FR 36126, Aug. 19, 1975, as amended at 47 FR 47837, Oct. 28, 1982]