Sec.

571.108 Standard No. 108; Lamps, reflective devices, and associated equipment. S1 Scope. S2 Purpose. S3 Application. S4 Definitions. S5 References to SAE publications. S6 Vehicle requirements. S6.1 Required lamps, reflective devices, and associated equipment by vehicle type. S6.1.1 Quantity. S6.1.1.1 Conspicuity systems. S6.1.1.2 High-mounted stop lamps. S6.1.1.3 Truck tractor rear turn signal lamps. S6.1.1.4 Daytime running lamps. S6.1.2 Color. S6.1.3 Mounting location. S6.1.3.3 License plate lamp. S6.1.3.4 High-mounted stop lamps. S6.1.3.4.1 Interior mounting. S6.1.3.4.2 Accessibility. S6.1.3.5 Headlamp beam mounting. S6.1.3.5.1 Vertical headlamp arrangement. S6.1.3.5.2 Horizontal headlamp arrangement. S6.1.3.6 Auxiliary lamps mounted near identification lamps. S6.1.4 Mounting height. S6.1.4.1 High-mounted stop lamps. S6.1.5 Activation. S6.1.5.1 Hazard warning signal. S6.1.5.2 Simultaneous beam activation. S6.2 Impairment. S6.2.3 Headlamp obstructions. S6.3 Equipment combinations. S6.4 Lens area, visibility and school bus signal lamp aiming. S6.4.1 Effective projected luminous lens area requirements. S6.4.2 Visibility. S6.4.3 Visibility options. S6.4.3(a) Lens area option. S6.4.3(b) Luminous intensity option. S6.4.4 Legacy visibility alternative. S6.4.5 School bus signal lamp aiming. S6.5 Marking. S6.5.1 DOT marking. S6.5.2 DRL marking. S6.5.3 Headlamp markings. S6.5.3.1 Trademark. S6.5.3.2 Voltage and trade number. S6.5.3.3 Sealed beam headlamp markings. S6.5.3.4 Replaceable bulb headlamp markings. S6.5.3.5 Additional headlamp markings. S6.6 Associated equipment. S6.6.3 License plate holder. S6.7 Replacement equipment. S6.7.1 General. S6.7.2 Version of this standard. S7 Signal lamp requirements. S7.1 Turn signal lamps. S7.1.1 Front turn signal lamps. S7.1.1.1 Number. S7.1.1.2 Color of light. S7.1.1.3 Mounting location. S7.1.1.4 Mounting height. S7.1.1.5 Activation. S7.1.1.6 Effective projected luminous lens area. S7.1.1.7 Visibility. S7.1.1.8 Indicator. S7.1.1.9 Markings. S7.1.1.10 Spacing to other lamps. S7.1.1.10.2 Spacing measurement for non-reflector lamps. S7.1.1.10.3 Spacing measurement for lamps with reflectors. S7.1.1.10.4 Spacing based photometric multipliers. S7.1.1.11 Multiple compartment lamps and multiple lamps. S7.1.1.11.4 Lamps installed on vehicles 2032 mm or more in overall width. S7.1.1.12 Ratio to parking lamps and clearance lamps. S7.1.1.13 Photometry. S7.1.1.14 Physical tests. S7.1.2 Rear turn signal lamps. S7.1.2.1 Number. S7.1.2.2 Color of light. S7.1.2.3 Mounting location. S7.1.2.4 Mounting height. S7.1.2.5 Activation. S7.1.2.6 Effective projected luminous lens area. S7.1.2.7 Visibility. S7.1.2.8 Indicator. S7.1.2.9 Markings. S7.1.2.10 Spacing to other lamps. S7.1.2.11 Multiple compartments and multiple lamps. S7.1.2.11.4 Lamps installed on vehicles 2032 mm or more in overall width. S7.1.2.12 Ratio to taillamps and clearance lamps. S7.1.2.13 Photometry. S7.1.2.14 Physical tests. S7.1.3 Combined lamp bulb indexing. S7.2 Taillamps. S7.2.1 Number. S7.2.2 Color of light. S7.2.3 Mounting location. S7.2.4 Mounting height. S7.2.5 Activation. S7.2.6 Effective projected luminous lens area. S7.2.7 Visibility. S7.2.8 Indicator. S7.2.9 Markings. S7.2.10 Spacing to other lamps. S7.2.11 Multiple compartments and multiple lamps. S7.2.11.4 Taillamps installed on vehicles 2032 mm or more in overall width. S7.2.12 Ratio. S7.2.13 Photometry. S7.2.14 Physical tests. S7.3 Stop lamps. S7.3.1 Number. S7.3.2 Color of light. S7.3.3 Mounting location. S7.3.4 Mounting height. S7.3.5 Activation. S7.3.6 Effective projected luminous lens area. S7.3.7 Visibility. S7.3.8 Indicator. S7.3.9 Markings. S7.3.10 Spacing to other lamps. S7.3.11 Multiple compartments and multiple lamps. S7.3.11.4 Lamps installed on vehicles 2032 mm or more in overall width. S7.3.12 Ratio to taillamps. S7.3.13 Photometry. S7.3.14 Physical tests. S7.3.15 Combined lamp bulb indexing. S7.4 Side marker lamps. S7.4.1 Number. S7.4.2 Color of light. S7.4.3 Mounting location. S7.4.4 Mounting height. S7.4.5 Activation. S7.4.6 Effective projected luminous lens area. S7.4.7 Visibility. S7.4.8 Indicator. S7.4.9 Markings. S7.4.10 Spacing to other lamps. S7.4.11 Multiple compartments and multiple lamps. S7.4.12 Ratio. S7.4.13 Photometry. S7.4.13.2 Inboard photometry. S7.4.14 Physical tests. S7.5 Clearance and identification lamps. S7.5.1 Number. S7.5.2 Color of light. S7.5.3 Mounting location. S7.5.4 Mounting height. S7.5.5 Activation. S7.5.6 Effective projected luminous lens area. S7.5.7 Visibility. S7.5.8 Indicator. S7.5.9 Markings. S7.5.10 Spacing to other lamps. S7.5.11 Multiple compartments and multiple lamps. S7.5.12 Ratio. S7.5.12.1 Clearance lamps. S7.5.12.2 Identification lamps. S7.5.13 Photometry. S7.5.14 Physical tests. S7.6 Backup lamps. S7.6.1 Number. S7.6.2 Color of light. S7.6.3 Mounting location. S7.6.4 Mounting height. S7.6.5 Activation. S7.6.6 Effective projected luminous lens area. S7.6.7 Visibility. S7.6.8 Indicator. S7.6.9 Markings. S7.6.10 Spacing to other lamps. S7.6.11 Multiple compartments and multiple lamps. S7.6.12 Ratio. S7.6.13 Photometry. S7.6.14 Physical tests. S7.7 License plate lamps. S7.7.1 Number. S7.7.2 Color of light. S7.7.3 Mounting location. S7.7.4 Mounting height. S7.7.5 Activation. S7.7.6 Effective projected luminous lens area. S7.7.7 Visibility. S7.7.8 Indicator. S7.7.9 Markings. S7.7.10 Spacing to other lamps. S7.7.11 Multiple compartments and multiple lamps. S7.7.12 Ratio. S7.7.13 Photometry. S7.7.14 Physical tests. S7.7.15 Installation. S7.7.15.4 Incident light from single lamp. S7.7.15.5 Incident light from multiple lamps. S7.8 Parking lamps. S7.8.1 Number. S7.8.2 Color of light. S7.8.3 Mounting location. S7.8.4 Mounting height. S7.8.5 Activation. S7.8.6 Effective projected luminous lens area. S7.8.7 Visibility. S7.8.8 Indicator. S7.8.9 Markings. S7.8.10 Spacing to other lamps. S7.8.11 Multiple compartments and multiple lamps. S7.8.12 Ratio. S7.8.13 Photometry. S7.8.14 Physical tests. S7.9 High-mounted stop lamps. S7.9.1 Number. S7.9.2 Color of light. S7.9.3 Mounting location. S7.9.4 Mounting height. S7.9.5 Activation. S7.9.6 Effective projected luminous lens area. S7.9.7 Visibility. S7.9.8 Indicator. S7.9.9 Markings. S7.9.10 Spacing to other lamps. S7.9.11 Multiple compartments and multiple lamps. S7.9.12 Ratio. S7.9.13 Photometry. S7.9.14 Physical tests. S7.10 Daytime running lamps (DRLs). S7.10.1 Number. S7.10.2 Color of light. S7.10.3 Mounting location. S7.10.4 Mounting height. S7.10.5 Activation. S7.10.6 Effective projected luminous lens area. S7.10.7 Visibility. S7.10.8 Indicator. S7.10.9 Markings. S7.10.10 Spacing to other lamps. S7.10.10.1 Spacing to turn signal lamps. S7.10.11 Multiple compartments and multiple lamps. S7.10.12 Ratio. S7.10.13 Photometry. S7.10.14 Physical tests. S7.11 School bus signal lamps. S7.11.1 Number. S7.11.2 Color of light. S7.11.3 Mounting location. S7.11.4 Mounting height. S7.11.5 Activation. S7.11.6 Effective projected luminous lens area. S7.11.7 Visibility. S7.11.8 Indicator. S7.11.9 Markings. S7.11.10 Spacing to other lamps. S7.11.11 Multiple compartments and multiple lamps. S7.11.12 Ratio. S7.11.13 Photometry. S7.11.14 Physical tests. S8 Reflective device requirements. S8.1 Reflex reflectors. S8.1.1 Number. S8.1.2 Color. S8.1.3 Mounting location. S8.1.4 Mounting height. S8.1.5 Activation. S8.1.6 Effective projected luminous lens area. S8.1.7 Visibility. S8.1.8 Indicator. S8.1.9 Markings. S8.1.10 Spacing to other lamps or reflective devices. S8.1.11 Photometry. S8.1.12 Physical tests. S8.1.13 Alternative side reflex reflector material. S8.2 Conspicuity systems. S8.2.1 Retroreflective sheeting. S8.2.1.2 Retroreflective sheeting material. S8.2.1.3 Certification marking. S8.2.1.4 Application pattern. S8.2.1.4.1 Alternating red and white materials. S8.2.1.5 Application location. S8.2.1.6 Application spacing. S8.2.1.7 Photometry. S8.2.2 Conspicuity reflex reflectors. S8.2.2.1 Certification marking. S8.2.2.2 Application pattern. S8.2.2.2.1 Alternating red and white materials. S8.2.2.2.2 White material. S8.2.2.3 Photometry. S8.2.3 Conspicuity system installation on trailers. S8.2.3.1 Trailer rear. S8.2.3.1.1 Element 1—alternating red and white materials. S8.2.3.1.2 Element 2—white. S8.2.3.1.3 Element 3—alternating red and white materials. S8.2.3.2 Trailer side-alternating red and white materials. S8.2.4 Conspicuity system installation on truck tractors. S8.2.4.1 Element 1—alternating red and white materials. S8.2.4.2 Element 2—white. S9 Associated equipment requirements. S9.1 Turn signal operating unit. S9.1.2 Physical tests. S9.2 Turn signal flasher. S9.2.2 Physical tests. S9.3 Turn signal pilot indicator. S9.3.4 Indicator size and color. S9.3.6 Turn signal lamp failure. S9.4 Headlamp beam switching device. S9.4.1 Semi-automatic headlamp beam switching device. S9.4.1.1 Operating instructions. S9.4.1.2 Manual override. S9.4.1.3 Fail safe operation. S9.4.1.4 Automatic dimming indicator. S9.4.1.5 Option 1 (Semiautomatic Headlamp Beam Switching Devices other than Adaptive Driving Beam systems). S9.4.1.5.1 Lens accessibility. S9.4.1.5.2 Mounting height. S9.4.1.5.3 Physical tests. S9.4.1.6 Option 2 (Adaptive Driving Beam systems). S9.4.1.7 Physical tests. S9.5 Upper beam headlamp indicator. S9.5.1 Indicator size and location. S9.6 Vehicular hazard warning signal operating unit. S9.6.2 Operating unit switch. S9.6.3 Physical tests. S9.7 Vehicular hazard warning signal flasher. S9.7.2 Physical tests. S9.8 Vehicular hazard warning signal pilot indicator. S9.8.4 Indicator size and color. S10 Headlighting system requirements. S10.1 Vehicle headlighting systems. S10.2 [Reserved]. S10.3 Number. S10.4 Color of light. S10.5 Mounting location. S10.6 Mounting height. S10.7 Activation. S10.8 Effective projected luminous lens area. S10.9 Visibility. S10.10 Indicator. S10.11 Markings. S10.12 Spacing to other lamps. S10.13 Sealed beam headlighting systems. S10.13.1 Installation. S10.13.2 Simultaneous aim. S10.13.3 Photometry. S10.13.4 Physical tests. S10.14 Integral beam headlighting systems. S10.14.1 Installation. S10.14.2 Aimability. S10.14.3 Simultaneous aim. S10.14.4 Markings. S10.14.5 Additional light sources. S10.14.6 Photometry. S10.14.7 Physical tests. S10.15 Replaceable bulb headlighting systems. S10.15.1 Installation. S10.15.2 Aiming restrictions. S10.15.3 Replacement lens reflector units. S10.15.4 Markings. S10.15.5 Additional light sources. S10.15.6 Photometry. S10.15.7 Physical tests. S10.16 Combination headlighting systems. S10.16.1 Installation. S10.16.2 Photometry. S10.16.3 Physical tests. S10.17 Motorcycle headlighting systems. S10.17.1 Installation. S10.17.1.1 Single headlamp. S10.17.1.2 Two headlamps with both beams. S10.17.1.3 Two headlamps, upper beam and lower beam. S10.17.2 Motorcycle replaceable bulb headlamp marking. S10.17.3 Photometry. S10.17.4 Physical tests. S10.17.5 Motorcycle headlamp modulation system. S10.17.5.1 Modulation. S10.17.5.2 Replacement modulators. S10.17.5.2.1 Replacement performance. S10.17.5.2.2 Replacement instructions. S10.18 Headlamp aimability performance requirements (except motorcycles). S10.18.1 Headlamp mounting and aiming. S10.18.2 Headlamp aiming systems. S10.18.3 Aim adjustment interaction. S10.18.4 Horizontal adjustment-visually aimed headlamp. S10.18.5 Optical axis marking. S10.18.5.1 Optical axis marking-vehicle. S10.18.5.2 Optical axis marking-lamp. S10.18.5.3 Optical axis marking-visual/optical aim headlamp. S10.18.6 Moveable reflectors. S10.18.7 External aiming. S10.18.7.1 Headlamp aiming device locating plates. S10.18.7.2 Nonadjustable headlamp aiming device locating plates. S10.18.8 On-vehicle aiming. S10.18.8.1 Aim. S10.18.8.1.1 Vertical aim. S10.18.8.1.2 Horizontal aim. S10.18.8.2 Aiming instructions. S10.18.8.3 Permanent calibration. S10.18.8.4 Replacement units. S10.18.8.5 Physical tests. S10.18.9 Visual/optical aiming. S10.18.9.1 Vertical aim, lower beam. S10.18.9.1.1 Vertical position of the cutoff. S10.18.9.1.2 Vertical gradient. S10.18.9.1.3 Horizontal position of the cutoff. S10.18.9.1.4 Maximum inclination of the cutoff. S10.18.9.1.5 Measuring the cutoff parameter. S10.18.9.2 Horizontal aim, lower beam. S10.18.9.3 Vertical aim, upper beam. S10.18.9.4 Horizontal aim, upper beam. S10.18.9.5 Photometry. S10.18.9.6 Visual/optical aiming identification marking. S11 Replaceable light source requirements. S11.1 Markings. S11.2 Ballast markings. S11.3 Gas discharge laboratory life. S11.4 Physical tests. S12 Headlamp concealment device requirements. S12.7 Certification election. S13 Replaceable headlamp lens requirements. S14 Physical and photometry test procedures and performance requirements. S14.1 General test procedures and performance requirements. S14.1.2 Plastic optical materials. S14.1.4 Samples. S14.1.5 Laboratory facilities. S14.2 Photometric test procedures. S14.2.1 Photometry measurements for all lamps except license lamps, headlamps, and DRLs. S14.2.1.1 Mounting. S14.2.1.2 School bus signal lamp aiming. S14.2.1.3 Measurement distance. S14.2.1.4 Location of test points. S14.2.1.5 Multiple compartment and multiple lamp photometry of turn signal lamps, stop lamps, and taillamps. S14.2.1.6 Bulbs. S14.2.2 License plate lamp photometry. S14.2.2.1 Illumination surface. S14.2.2.2 Test stations. S14.2.3 Reflex reflector and retroreflective sheeting photometry. S14.2.3.1 Mounting. S14.2.3.2 Illumination source. S14.2.3.3 Measurement distance. S14.2.3.4 Test setup. S14.2.3.5 Photodetector. S14.2.3.6 Photometry surface. S14.2.3.7 Procedure. S14.2.3.8 Measurements. S14.2.3.8.1 Reflex reflectors. S14.2.3.8.2 Retroreflective sheeting. S14.2.3.8.3 Reflex reflector photometry measurement adjustments. S14.2.4 Daytime running lamp (DRL) photometry measurements. S14.2.5 Headlamp photometry measurements. S14.2.5.1 Mounting. S14.2.5.3 Measurement distance. S14.2.5.4 Seasoning and test voltage. S14.2.5.5 Aiming. S14.2.5.5.1 Mechanically aimable headlamps using an external aimer. S14.2.5.5.2 Mechanically aimable headlamps equipped with a VHAD. S14.2.5.5.3 Visually aimable lower beam headlamps-vertical aim. S14.2.5.5.4 Visually aimable lower beam headlamps-horizontal aim. S14.2.5.5.5 Visually aimable upper beam headlamps-vertical aim. S14.2.5.5.6 Visually aimable upper beam headlamps-horizontal aim. S14.2.5.5.7 Simultaneous aim Type F sealed beam headlamps and beam contributor integral beam headlamps. S14.2.5.5.8 Motorcycle headlamp-upper beam headlamps designed to comply with Table XX. S14.2.5.5.9 Motorcycle headlamp-lower beam headlamps designed to comply with Table XX. S14.2.5.6 Positioner. S14.2.5.7 Photometer. S14.2.5.7.2 Sensor. S14.2.5.8 Location of test points. S14.2.5.9 Beam contributor photometry measurements. S14.2.5.10 Moveable reflector aimed headlamp photometry measurements. S14.3 Motorcycle headlamp out of focus test procedure and performance requirements. S14.3.1 Procedure. S14.3.2 Performance requirements. S14.4 General test procedures and performance requirements. S14.4.1 Color test. S14.4.1.1 Samples. S14.4.1.2 General procedure. S14.4.1.3 Visual method. S14.4.1.3.1 Visual method procedure. S14.4.1.3.2 Visual method performance requirements. S14.4.1.3.2.1 Red. S14.4.1.3.2.2 Yellow (Amber). S14.4.1.3.2.3 White. S14.4.1.4 Tristimulus method. S14.4.1.4.1 Tristimulus method procedure. S14.4.1.4.2 Tristimulus method performance requirements. S14.4.1.4.2.1 Red. S14.4.1.4.2.2 Yellow (Amber). S14.4.1.4.2.3 White (achromatic). S14.4.1.4.2.4 Green. S14.4.1.4.2.5 Restricted Blue. S14.4.1.4.2.6 Signal Blue. S14.4.2 Plastic optical materials tests. S14.4.2.1 Samples. S14.4.2.2 Outdoor exposure test. S14.4.2.2.3 Procedure. S14.4.2.2.4 Performance requirements. S14.4.2.3 Heat test. S14.4.2.3.1 Procedure. S14.4.2.3.2 Performance requirements. S14.5 Signal lamp and reflective device physical test procedures and performance requirements. S14.5.1 Vibration test. S14.5.1.1 Procedure. S14.5.1.2 Performance requirements. S14.5.2 Moisture test. S14.5.2.1 Procedure. S14.5.2.2 Performance requirements. S14.5.3 Dust test. S14.5.3.1 Samples. S14.5.3.2 Procedure. S14.5.3.3 Performance requirements. S14.5.4 Corrosion test. S14.5.4.1 Procedure. S14.5.4.2 Performance requirements. S14.6 Headlamp physical test procedures and performance requirements. S14.6.1 Abrasion test. S14.6.1.1 Procedure. S14.6.1.1.1 Abrading pad. S14.6.1.1.2 Abrading pad alignment. S14.6.1.1.3 Abrasion test procedure. S14.6.1.2 Performance requirements. S14.6.2 Chemical resistance test. S14.6.2.1 Procedure. S14.6.2.1.1 Test fluids. S14.6.2.1.2 Fluid application. S14.6.2.1.3 Test duration. S14.6.2.2 Performance requirements. S14.6.3 Corrosion test. S14.6.3.1 Procedure. S14.6.3.2 Performance requirements. S14.6.4 Corrosion-connector test. S14.6.4.1 Procedure. S14.6.4.2 Performance requirements. S14.6.5 Dust test. S14.6.5.1 Procedure. S14.6.5.2 Performance requirements. S14.6.6 Temperature cycle test and internal heat test. S14.6.6.1 Samples. S14.6.6.2 General procedure. S14.6.6.3 Temperature cycle test. S14.6.6.3.1 Procedure. S14.6.6.3.2 Performance requirements. S14.6.6.4 Internal heat test. S14.6.6.4.1 Procedure. S14.6.6.4.2 Performance requirements. S14.6.7 Humidity test. S14.6.7.1 Procedure. S14.6.7.2 Performance requirements. S14.6.8 Vibration test. S14.6.8.1 Samples. S14.6.8.2 Procedure. S14.6.8.3 Performance requirements. S14.6.9 Sealing test. S14.6.9.1 Procedure. S14.6.9.2 Performance requirements. S14.6.10 Chemical resistance test of reflectors of replaceable lens headlamps. S14.6.10.1 Procedure. S14.6.10.1.1 Test fluids. S14.6.10.1.2 Fluid application. S14.6.10.1.3 Test duration. S14.6.10.2 Performance requirements. S14.6.11 Corrosion resistance test of reflectors of replaceable lens headlamps. S14.6.11.1 Procedure. S14.6.11.2 Performance requirements. S14.6.12 Inward force test. S14.6.12.1 Procedure. S14.6.12.2 Performance requirements. S14.6.13 Torque deflection test. S14.6.13.1 Procedure. S14.6.13.2 Performance requirements. S14.6.14 Retaining ring test. S14.6.14.1 Procedure. S14.6.14.2 Performance requirements. S14.6.15 Headlamp connector test. S14.6.15.1 Procedure. S14.6.15.2 Performance requirements. S14.6.16 Headlamp wattage test. S14.6.16.1 Procedure. S14.6.16.2 Performance requirements. S14.6.17 Aiming adjustment test-laboratory. S14.6.17.1 Procedure. S14.6.17.2 Performance requirements. S14.6.18 Aiming adjustment test-on vehicle. S14.6.18.1 Procedure. S14.6.18.2 Performance requirements. S14.7 Replaceable light source physical test procedures and performance requirements. S14.7.1 Deflection test for replaceable light sources. S14.7.1.1 Procedure. S14.7.1.2 Performance requirements. S14.7.2 Pressure test for replaceable light sources. S14.7.2.1 Procedure. S14.7.2.2 Performance requirements. S14.7.3 Replaceable light source power and flux measurement procedure. S14.7.3.1 Seasoning. S14.7.3.1.1 Resistive filament source. S14.7.3.1.2 Discharge source. S14.7.3.2 Test voltage. S14.7.3.3 Luminous flux measurement. S14.7.3.3.1 Resistive filament light source setup. S14.7.3.3.3.2 Discharge light source setup. S14.8 Vehicle headlamp aiming devices (VHAD) physical test procedures and performance requirements. S14.8.1 Samples. S14.8.2 Scale graduation test. S14.8.2.1 Procedure. S14.8.2.2 Performance requirements. S14.8.3 Cold scale graduation test. S14.8.3.1 Procedure. S14.8.3.2 Performance requirements. S14.8.4 Hot scale graduation test. S14.8.4.1 Procedure. S14.8.4.2 Performance requirements. S14.8.5 Thermal cycle test. S14.8.5.1 Procedure. S14.8.5.2 Performance requirements. S14.8.6 Corrosion test. S14.8.6.1 Procedure. S14.8.6.2 Performance requirements. S14.8.7 Photometry test. S14.8.7.1 Procedure. S14.8.7.2 Performance requirements. S14.9 Associated equipment physical test procedures and performance requirements. S14.9.1 Turn signal operating unit durability test. S14.9.1.1 Power supply specifications. S14.9.1.2 Procedure. S14.9.1.3 Performance requirements. S14.9.2 Vehicular hazard warning signal operating unit durability test. S14.9.2.1 Procedure. S14.9.2.2 Performance requirements. S14.9.3 Turn signal flasher and vehicular hazard warning flasher tests. S14.9.3.1 Standard test circuit. S14.9.3.1.1 Test circuit setup. S14.9.3.2 Power supply specifications. S14.9.3.2.1 Starting time, voltage drop, and flash rate and percent current “on” time tests. S14.9.3.2.2 Durability tests. S14.9.3.3 Turn signal flasher starting time test. S14.9.3.3.1 Samples. S14.9.3.3.2 Procedure. S14.9.3.3.3 Performance requirements. S14.9.3.4 Turn signal flasher voltage drop test. S14.9.3.4.1 Samples. S14.9.3.4.2 Procedure. S14.9.3.4.3 Performance requirements. S14.9.3.5 Turn signal flasher flash rate and percent current “on” time test. S14.9.3.5.1 Samples. S14.9.3.5.2 Procedure. S14.9.3.5.3 Performance requirements. S14.9.3.6 Turn signal flasher durability test. S14.9.3.6.1 Samples. S14.9.3.6.2 Procedure. S14.9.3.6.3 Performance requirements. S14.9.3.7 Vehicular hazard warning signal flasher starting time test. S14.9.3.7.1 Samples. S14.9.3.7.2 Procedure. S14.9.3.7.3 Performance requirements. S14.9.3.8 Vehicular hazard warning signal flasher voltage drop test. S14.9.3.8.1 Samples. S14.9.3.8.2 Procedure. S14.9.3.8.3 Performance requirements. S14.9.3.9 Vehicular hazard warning signal flasher flash rate and percent “on” time test. S14.9.3.9.1 Samples. S14.9.3.9.2 Procedure. S14.9.3.9.3 Performance requirements. S14.9.3.10 Vehicular hazard warning signal flasher durability test. S14.9.3.10.1 Samples. S14.9.3.10.2 Procedure. S14.9.3.10.3 Performance requirements. S14.9.3.11 Semiautomatic headlamp beam switching device tests. S14.9.3.11.1 Test conditions. S14.9.3.11.2 Sensitivity test. S14.9.3.11.2.1 Samples. S14.9.3.11.2.2 Procedure. S14.9.3.11.2.3 Performance requirements. S14.9.3.11.2.3.1 Operating limits. S14.9.3.11.3 Voltage regulation test. S14.9.3.11.3.1 Procedure. S14.9.3.11.3.2 Performance requirements. S14.9.3.11.4 Manual override test. S14.9.3.11.4.1 Procedure. S14.9.3.11.4.2 Performance requirements. S14.9.3.11.5 Warmup test. S14.9.3.11.5.1 Procedure. S14.9.3.11.5.2 Performance requirements. S14.9.3.11.6 Temperature test. S14.9.3.11.6.1 Procedure. S14.9.3.11.6.2 Performance requirements. S14.9.3.11.7 Dust test. S14.9.3.11.7.1 Procedure. S14.9.3.11.7.2 Performance requirements. S14.9.3.11.8 Corrosion test. S14.9.3.11.8.1 Procedure. S14.9.3.11.8.2 Performance requirements. S14.9.3.11.9 Vibration test. S14.9.3.11.9.1 Procedure. S14.9.3.11.9.2 Performance requirements. S14.9.3.11.10 Sunlight test. S14.9.3.11.10.1 Procedure. S14.9.3.11.10.2 Performance requirements. S14.9.3.11.11 Durability test. S14.9.3.11.11.1 Procedure. S14.9.3.11.11.2 Performance requirements. S14.9.3.11.12 Return to upper beam test. S14.9.3.11.12.1 Procedure. S14.9.3.11.12.2 Performance requirements. S14.9.3.12 Test for compliance with adaptive driving beam photometry requirements. S14.9.3.12.1 Test Scenarios. S14.9.3.12.2 Compliance Criteria. S14.9.3.12.3 Stimulus test fixtures. S14.9.3.12.4 Test vehicle preparation. S14.9.3.12.5 Test road. S14.9.3.12.6 Other test parameters and conditions. Table I-a Required lamps and reflective devices All passenger cars, multipurpose passenger vehicles (MPV), trucks, and buses Table I-b Required lamps and reflective devices All trailers Table I-c Required lamps and reflective devices All motorcycles Table II-a Headlighting systems Sealed beams Table II-b Headlighting systems Combination Table II-c Headlighting systems Integral beams Table II-d Headlighting systems Replaceable bulb Table III Marking requirements location Table IV-a Effective projected luminous lens area requirements Table IV-b Effective projected luminous lens area requirements Table IV-c Effective projected luminous lens area requirements Table V-a Visibility requirements of installed lighting devices Table V-b Visibility requirements of installed lighting devices Lens area visibility option Table V-c Visibility requirements of installed lighting devices Luminous intensity visibility option Table V-d Visibility requirements of installed lighting devices (Legacy visibility alternative) Table VI-a Front turn signal lamp photometry requirements Table VI-b Front turn signal lamp photometry requirements Table VII Rear turn signal lamp photometry requirements Table VIII Taillamp photometry requirements Table IX Stop lamp photometry requirements Table X Side marker lamp photometry requirements Table XI Clearance and identification lamps photometry requirements Table XII Backup lamp photometry requirements Table XIII-a Motorcycle turn signal lamp alternative photometry requirements Table XIII-b Motor driven cycle stop lamp alternative photometry requirements Table XIV Parking lamp photometry requirements Table XV High-mounted stop lamp photometry requirements Table XVI-a Reflex reflector photometry requirements Table XVI-b Additional photometry requirements for conspicuity reflex reflectors Table XVI-c Retroreflective sheeting photometry requirements Table XVII School bus signal lamp photometry requirements Table XVIII Headlamp upper beam photometry requirements Table XIX-a Headlamp lower beam photometry requirements Table XIX-b Headlamp lower beam photometry requirements Table XIX-c Headlamp lower beam photometry requirements Table XX Motorcycle and motor driven cycle headlamp photometry requirements Table XXI Adaptive Driving Beam Photometry Requirements Table XXII Adaptive Driving Beam Test Matrix Figure 1 Chromaticity diagram Figure 2 Flasher performance chart Figure 3 Replaceable bulb headlamp aim pads Figure 4 Headlamp connector test setup Figure 5 Headlamp abrasion test fixture Figure 6 Thermal cycle test profile Figure 7 Dirt/Ambient test setup Figure 8 Replaceable light source deflection test setup Figure 9 Environmental test profile Figure 10 Replaceable light source pressure test setup Figure 11 Trailer conspicuity treatment examples Figure 12-1 Trailer conspicuity detail I Figure 12-2 Trailer conspicuity detail II Figure 13 Tractor conspicuity treatment examples Figure 14 92 x 150 Headlamp aim deflection test setup Figure 15 Types G and H headlamp aim deflection test setup Figure 16 Types A and E headlamp aim deflection test setup Figure 17 Type B headlamp aim deflection test setup Figure 18 Types C and D headlamp aim deflection test setup Figure 19 License plate lamp target locations Figure 20 License plate lamp measurement of incident light angle Figure 21 Vibration test machine Figure 22 Flasher standard test circuit Figure 23 Car/Truck opposite direction stimulus test fixture dimensions Figure 24 Car/Truck same direction stimulus test fixture dimensions Figure 25 Motorcycle opposite direction stimulus test fixture dimensions Figure 26 Motorcycle same direction stimulus test fixture dimensions Figure 27 Opposite direction test scenarios Figure 28 Same direction test scenarios Figure 29 Left Curve Test Scenarios Figure 30 Right Curve Test Scenarios [87 FR 10021, Feb. 22, 2022]