MIL-STD-1179 Lamps, Reflectors And Associated Signaling Equipment For Military VehiclesThis standard applies to all military combat, special purpose and tactical transport vehicles, both tracked and wheeled. Administrative and commercial vehicles are not within the scope of this standard, since total compliance with Motor Vehicle Safety Standard MVSS No. 108 is required for these vehicles. Infrared secure lighting photometric requirements apply to new military vehicles starting with serial number 1 manufactured after September 1, 1988. Retrofit, rebuild, or other modifications of military vehicles built before September 1, 1988 will conform to Secure Lighting Requirements upon determination of need and discretionary judgment by the appropriate modifying Government agent.

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MIL-STD-1179E

4.5.5.2 Visibility from air.

a. Vehicle on 20 percent downgrade. When vehicle is on a 20 percent downgrade, the vertical angles of cutoff above the horizontal shall be the maximum practicable, provided the single light effect of the secure blackout stoplamp shall not be visible from the air at more than 400 feet above a horizontal line extended through the secure blackout taillamp.

b. Vehicle on level road. When vehicle is on a level road the vertical angles of

cutoff of the secure blackout stoplamp below the horizontal shall be such as not to cast a reflection on the road that would be visible from the air at a height of more than 400 feet.

4.5.5.3 Horizontal visibility on road. When the vehicle is on a level road, the horizontal angles of cutoff shall be the maximum practicable but shall be not less than 60 degrees right or left of the beam centerline at 100 feet.

4.5.5.4 Color of visible light. Color values of the transmitted visible light shall be in accordance with trichormatic coefficients specified in component drawings.

4.6 Wheeled vehicle requirements for service lighting equipment.

4.6.1 Wheeled vehicle minimum lighting equipment. Except as specified in 4.6.1.1 through 4.6.1.7, military wheeled vehicles shall be equipped as a minimum with lamps, reflective devices, and associated signaling equipment in accordance with table I or table III, as applicable.

4.6.1.1 Wheeled vehicle identification lamps. Front identification lamps shall be applied only on hardtop vehicles.

4.6.1.2 Truck and truck tractor tail and parking lamps. When the taillamps and parking lamps on trucks and truck tractors are located within 6 inches of the extreme edge of the vehicle (see 4.2.2), they may also serve as clearance lamps, and separate clearance lamps are not required.

4.6.1.3 Truck tractor side marker devices, clearance lamps and identification lamps. A truck tractor need not be equipped with any rear side marker devices, rear clearance lamps and rear identification lamps.

4.6.1.4 Wheeled vehicle intermediate marker lamp and side reflector. Intermediate side marker lamps and intermediate side reflex reflectors are required only on vehicles 30 or more feet in overall length.

4.6.1.5 Truck, light, warning, vehicular, rotating DC. The 360 degree flashing warning lamp is required only on trucks designed specifically to haul overwidth, slow-moving loads and on wreckers, emergency vehicles, repair vehicles, and utility servicing vehicles.