Federal Air Brake Regulations
Federal Brake Hose Regulations
Federal Lighting Regulations
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Title 49, § 393.11
Lights and Reflectors
Sec. 393.11 Lighting devices and reflectors.
The following Table 1 sets forth the required color, position,
and required lighting devices by type of commercial motor vehicle.
Diagrams illustrating the locations of lighting devices and reflectors,
by type and size of commercial motor vehicle, are shown immediately
following
Table 1. All lighting devices on motor vehicles placed in operation
after March 7, 1989, must meet the requirements of 49 CFR 571.108
in effect at the time of manufacture of the vehicle. Motor vehicles
placed in operation on or before March 7, 1989, must meet either
the requirements of this subchapter or part 571 of this title in
effect at the time of manufacture.
| Table 1--Required Commercial Vehicle Lighting
Equipment |
| Item on the vehicle |
Quantity |
Color |
Location |
Position |
Height above road surface in inches measured from the center
of the lamp at curb weight |
Required lighting devices/vehicles |
| Headlamps |
2 At least |
White |
Front |
On the front at the same height, an equal number at each side
of the vertical centerline as far apart as practicable |
Not less than 22 nor more than 54 |
A,B,C |
| Turn Signal (Front) See footnotes 2 & 12 |
2 |
Amber |
At or near front |
On each side of the vertical centerline at the same height
and as far apart as practicable |
Not less than 15 nor more than 83 |
A,B,C, |
| Identification lamp (front) See footnote 1 |
3 |
Amber |
Front |
Mounted on the vertical centerline of the vehicle or the vertical
centerline of the cab where different from the centerline of
the vehicle |
All three on same level as close as practicable to the top
of the vehicle with lamp centers spaced not less than 6 inches
or more than 12 inces apart |
B,C |
| Tail lamp. See fottnotes 5 & 11 |
2 |
Red |
Rear |
One lamp on each side of the vertical centerline at the same
height and as far apart as practicable |
Both on the same level between 15 and 72 |
A,B,C,D,E,F,G,H |
| Stop lamp. See footnotes 5 & 13 |
2 |
Red |
Rear |
One lamp on each side of the vertical centerline at the same
height and as far apart as practicable |
Both on the same level between 15 and 72 |
A,B,C,D,E,F,G |
| Clearance Lamps. See footnotes 9, 10, & 15 |
2
2
|
Amber
Red
|
One on each side of front
One on each side of rear
|
One on each side of the vertical centerline to indicate width
One on each side of the vertical centerline to indicate overall
width
|
Both on the same level as high as practicable
Both on the same level as high as practicable
|
B,C,D,G,H
B,D,G,H
|
| Side marker lamp, Intermediate |
2 |
Amber |
One on each side |
At or near midpoint between front and rear side marker lamps,
if over 30' in length |
Not less than 1 |
A,B,D,F,G |
| Reflex reflector Intermediate (side) |
2 |
Amber |
One on each side |
At or near midpoint between front and rear side reflectors
if over 30' in length |
Between 15 and 60 |
A,B,D,F,G |
| Reflex reflector (rear) See footnotes 5, 6, & 8 |
2 |
Red |
Rear |
One on each side of vertical centerline, as far apart as practicable |
Both on same level, between 15 and 60 |
A,B,C,D,E,F,G,= |
| Reflex reflector (rear side). See footnote 4 |
2 |
Red |
One on each side (rear) |
As far to the rear as practicable |
Both on the same level, between 15 and 60 |
A,B,D,F,G |
| Reflex reflector (front side) |
2 |
Amber |
One on each side (front) |
As far to the front as practicable |
Between 15 and 60 |
A,B,C,D,F,G |
| License plate lamp rear. See footnote 11 |
1 |
White |
At rear license plate |
To illuminate the license place from the top or sides |
No requirements |
A,B,C,D,F,G |
| Side marker lamp (front) |
2 |
Amber |
One on each side |
As far to the front as practicable |
Not less than 15 |
A,B,C,D,F |
| Side marker lamp (rear). See footnotes 4 & 8 |
2 |
Red |
One on each side |
As far to the rear as practicable |
Not less than 15 and on the rear of trailer, not more than
60 |
A,B,D,F,G |
| Turn signal (rear). See footnotes 5 & 12 |
2 |
Amber or red |
Rear |
On lamp on each side of the vertical centerline as far apart
as practicable |
Both on the same level, between 15 and 83 |
A,B,C,D,E,F,G |
| Identification lamp (rear). See footnotes 3, 7, & 15 |
3 |
Red |
Rear |
One as clos as practicable to vertical centerline. One on
each side with lamp centers spaced not less than 6" or
more than 12" apart |
All three on same level as close as practicable to the top
of the vehicle |
B,D,G |
| Vehicular hazard warning flashing lamps. See footnote 12. |
2
2
|
Amber
Amber or Red
|
Front
Rear
|
One lamp on each side of vertical centerline as far apart
as practicable
|
Both on same level, between 15 and 83 |
A,B,C,D,E,F,G |
| Backup lamp. See footnote 14 |
1 |
White |
Rear |
Rear |
No requirement |
A,B,C |
| Parking lamp |
2 |
Amber or white |
Front |
One lamp on each side of vertical centerline as far apart
as practicable |
Both on same level, between 15 and 72 |
A |
* Lighting Required per Type of Commercial Vehicle as Shown Last Column
of Table.
A. Small buses and trucks less than 80 inches in overall width.
B. Buses and trucks 80 inches or more in overall width.
C. Truck Tractors.
D. Large semitrailers and full trailers 80 inches or more in overall
width except converter dollies.
E. Converter dolly.
F. Small semitrailers and full trailers less than 80 inches in overall
width.
G. Pole Trailers.
H. Projecting loads.
Lamps and reflectors may be combined as permitted by Paragraphs
393.22 and S4.4 of 49 CFR 571.108, Equipment combinations.
Footnote--1
Identification lamps may be mounted on the vertical centerline of
the cab where different from the centerline of the vehicle, except
where
the cab is not more than 42 inches wide at the front roofline, then
a
single lamp at the center of the cab shall be deemed to comply with
the
requirements for identification lamps. No part of the identification
lamps or their mountings may extend below the top of the vehicle
windshield.
Footnote--2
Unless the turn signals on the front are so constructed (double-
faced) and located as to be visible to passing drivers, two turn
signals
are required on the rear of the truck tractor, one at each side
as far
apart as practicable.
Footnote--3
The identification lamps need not be visible or lighted if obscured
by a vehicle in the same combination.
Footnote--4
Any semitrailer or full trailer vehicles manufactured on and after
March 1, 1979, shall be equipped with rear side-marker lamps at
a height
of not less than 15 inches (381 mm) nor more than 60 inches (1524
mm)
above the road surface, as measured from the center of the lamp
on the
vehicle at curb weight. The rear side marker lamps shall be visible
in
the vehicle's rearview mirrors when the trailer is tracking straight.
Footnote--5
For purposes of these regulations, each converter dolly shall be
equipped with one stop lamp, one tail lamp, and two reflectors on
the
rear at each side when towed singly by another vehicle. Each converter
dolly shall be equipped with turn signals at the rear if the converter
dolly obscures the turn signals at the rear of the towing vehicle
when
towed singly by another vehicle.
Footnote--6
Pole trailers will have two reflectors, one on each side, placed
to
indicate extreme width of the trailer.
Footnote--7
Pole trailers may have three identification lamps mounted on the
vertical centerline of the rear of the cab of the truck tractor
drawing
the pole trailer, and higher than the load being transported, in
lieu of
the three identification lamps mounted on the rear vertical centerline
of the trailer.
Footnote--8
Pole trailers shall have on the rearmost support for the load, one
combination marker lamp or two single lamps showing amber to the
front
and red to the rear and side, mounted on each side to indicate maximum
width of the pole trailer; and one red reflector on each side of
the
rearmost support for the load.
Footnote--9
Any motor vehicle transporting a load which extends more than 4
inches beyond the width of the motor vehicle, or having projections
beyond the rear of such vehicles, shall be equipped with the following
lamps in addition to other required lamps, have the loads marked
Loads projecting more than 4 inches beyond sides of motor vehicles:
(1) The foremost edge of the projecting load at its outermost
extremity shall be marked with an amber lamp visible from the front
and
both sides.
(2) The rearmost edge of the projecting load at its outermost
extremity shall be marked with a red lamp visible from the rear
and
side.
(3) If any portion of the projecting load extends beyond both the
foremost and rearmost edge, it shall be marked with an amber lamp
visible from the front, both sides, and rear.
(4) If the protecting load does not measure more than 3 feet from
front to rear, it shall be marked with an amber lamp visible from
the
front, both sides, and rear, except that if the projection is located
at
or near the rear it shall be marked by a red lamp visible from front,
side, and rear.
Footnote--10
Projections beyond rear of motor vehicles. Motor vehicles
transporting loads which extend more than 4 feet beyond the rear
of the
motor vehicle, or which have these tailboards or tailgates extending
more than 4 feet beyond the body, shall have projections marked
as
follows:
(1) On each side of the projecting load, one red lamp, visible from
the side, located so as to indicate maximum overhang.
(2) On the rear of the projecting load, two red lamps, visible from
the rear, one at each side; and two red reflectors visible from
the
rear, one at each side, located so as to indicate maximum width.
Footnote--11
To be illuminated when tractor headlamps are illuminated.
Footnote--12
Every bus, truck, and truck tractor shall be equipped with a
signaling system that, in addition to signaling turning movements,
shall
have a switch or combination of switches that will cause the two
front
turn signals and the two rear signals to flash simultaneously as
a
vehicular traffic signal warning, required by Sec. 392-22(a). The
system
shall be capable of flashing simultaneously with the ignition of
the
vehicle on or off.
Footnote--13
To be actuated upon application of service brakes.
Footnote--14
Backup lamp required to operate when bus, truck, or truck tractor
is
in reverse.
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Footnote--15
When the rear identification lamps are mounted at the extreme height
of a vehicle, rear clearance lamps need not meet the requirement
that
they be located as close as practicable to the top of the vehicle.
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Legend (Used in Illustrations)
1. Headlamps (2)-White (4 optional)
2. Side-marker lamps. Front (2)-Amber
3. Side reflectors. Front (2)-Amber
4. Turn-signal lamps. Front (2)-Amber
4a. Turn-signal lamps. Front (2)-Amber (Optional location)
5. Identification lamps. Front (3)-Amber
5a. Identification lamps. Front (3)-Amber (Optional location)
6. Clearance lamps. Front (2)-Amber
7. Side-marker lamps. Rear (2)-Red
8. Side-reflectors. Rear (2)-Red
9. Identification lamps. Rear (3)-Red
10. Clearance lamps. Rear (2)-Red
11. Reflectors Rear (2)-Red
12. Stop lamps. Rear (2)-Red
13. License plate lamp. Rear (1)-White
14. Backup lamp. Rear (1)-White (location optional provided optional
requirements are met)
15. Side-marker lamps. Intermediate (2)-Amber (if vehicle is 30'
or more
overall length)
16. Side reflectors. Intermediate (2)-Amber (if vehicle is 30' or
more
overall length)
17. Turn signal lamps. Rear (2)-Amber or Red
18. Tail lamps. Rear (2)-Red
19. Parking lamps. Front 2-Amber or White
[53 FR 49385, Dec. 7, 1988]
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