Appendix A. (Continued)

TABLE IV—LOCATION OF REQUIRED EQUIPMENT—Continued.
ALL PASSENGER CARS AND MOTORCYCLES, AND MULTIPURPOSE PASSENGER VEHICLES, TRUCKS,
TRAILERS AND BUSES OF LESS THAN 80 INCHES OVERALL WIDTH—Continued

	Location on
			Height above road surface
Item	Passenger cars, multipurpose passenger vehicles, trucks, trailers and buses	Motorcycles	measured from center of item on vehicle at curb weight
Column 1	Column 2	Column 3	Column 4
Reflex reflectors.	On the rear—1 red on each side of the vertical centerline, at the same height, and as far apart as practicable.2 On each side—1 red as far to the rear as practicable, and 1 amber as far to the front as practicable. 1	On the rear—1 red on the vertical centerline except that, if two are used on the rear, they shall be symmetrically disposed about the vertical centerline. On each side—1 red as far to the rear as practicable, and 1 amber as far to the front as practicable.	Not less than 15 inches, nor more than 60 inches.
Backup lamp …	On the rear …	Not required …	No requirement.
Turn signal lamps. 1	At or near the front—1 amber on each side of the vertical centerline, at the same height, and as far apart as practicable. On the rear—1 red or amber on each side of the vertical centerline, at the same height, and as far apart as practicable.	At or near the front—1 amber on each side of the vertical centerline at the same height, and having a minimum horizontal separation distance (centerline of lamps) of 16 inches. Minimum edge to edge separation distance between lamp and headlamp is 4 inches. At or near the rear—1 red or amber on each side of the vertical centerline, at the same height and having a minimum horizontal separation distance (centerline to centerline of lamps) of 9 inches. Minimum edge to edge separation distance between lamp and tail or stop lamp is 4 inches.	Not less than 15 inches, nor more than 83 inches.
Side marker lamps.	On each side—1 red as far to the rear as practicable, and 1 amber as far to the front as practicable.	Not required …	Not less than 15 inches.
Intermediate side marker lamps.	On each side—1 amber located at or near the midpoint between the front and rear side marker lamps.	Not required …	Not less than 15 inches.
Intermediate side marker reflectors.	On each side—1 amber located at or near the midpoint between the front and rear side marker reflectors.	Not required …	Not less than 15 inches, nor more than 60 inches.
1 Front turn signal lamps not required for trailers. NOTE: (1) The term ‘‘overall width’’ refers to the nominal design dimension of the widest part of the vehicle, exclusive of signal lamps, marker lamps, outside rearview mirrors, flexible fender extensions, and mud flaps, determine with doors and windows closed, and the wheels in the straight-ahead position. This supersedes the interpretation of the term ‘‘overall width’’ appearing in the FEDERAL REGISTER of March 1, 1967 (32 Fed. Reg. 3390). (2) Paragraph S3.1 and Tables I and III of § 571.108 as amended (32 Fed. Reg. 18033, Dec. 16, 1967), specify that certain lamp assemblies shall conform to applicable SAE Standards. Each of these basically referenced standards subreferences both SAE Standard J575 (tests for motor vehicle lighting devices and components) which in turn references SAE Standard J573 on bulbs, and SAE Standard J567 on bulb sockets.		2 See S4.1.1.18. (3) Paragraph C of SAE Standard J575 states in part: ‘‘Where special bulbs are specified, they should be submitted with the devices and the same or similar bulbs used in the tests and operated at their rated mean spherical candlepower.’’ The Administrator has determined that this provision of SAE Standard J575 permits the use of special bulbs, including tubular-type bulbs, which do not conform to the detailed requirements of Table I of SAE Standard J573. It follows that the sockets for special bulbs need not conform to the detailed requirements of SAE Standard J567. These provisions for special bulbs in no way except the lamp assemblies from meeting all performance requirements specified in Federal Standard No. 108, including those specified in the basically referenced SAE Standards, and in the subreferenced SAE Standard J575. [41 Fed. Reg. 33522, Aug. 23, 1976]