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(b) The vehicular hazard signal function shall operate independently of the ignition switch.
(c) If the vehicular hazard operating unit is combined with the turn signal operating unit, the operating motion of the hazard function shall differ from the actuating motion of the turn switch function.
S3.2 Durability test. The vehicular hazard operating unit shall be durability tested at rated voltage with the maximum bulb load to be used on the vehicle. (Note: The flasher not to be included in the circuit during test.) The unit should be turned "on" and "off" in the normal manner, at a rate of not more than 15 cycles per minute. One cycle shall consist of "off" to "on" and return to "off." The test sequence shall consist of: 
10,000 Cycles at a temperature of 75 degrees F., plus or minus 10 degrees F.
1 Hour "on" at a temperature of 75 degrees F., plus or minus 10 degrees F.

The unit shall be operative at the completion of the test (except bulbs may be replaced during the period of test) and the voltage drop from the input terminal to each output terminal (including 3 inches of No. 16 or 18 gage wire on each side of the switch) shall not exceed 0.3 volts with rated lamp load for either 6.4 or 12.8 line voltage before and after test. A combination switch shall meet all other applicable requirements for its function, in addition to the above durability test.
S3.3 Pilot indicators lamps. In vehicles equipped with right and left hand turn signal pilot indicators, both pilots and/or a separate pilot shall flash simultaneously while the vehicle hazard operating unit is turned "on." In vehicles equipped with a single turn signal pilot indicator, a separate vehicular hazard pilot indicator shall flash and the turn signal pilot may flash while the vehicular hazard operating unit is turned "on." If a separate vehicular hazard pilot indicator is used, it shall emit a red color and have a minimum area equivalent to a 0.5 inch diameter circle.
S3.4 Flashers. Flashers used with the vehicular hazard warning switches shall be capable of flashing the specified lamp load between 60-120 flashes per minute and 30 to 75 percent "on" time. In the event of failure of one or more of the hazard signal lamps, the remaining lamps shall continue to flash.

[Federal Standard No. 515/8]

SAFETY GLASS FOR AUTOMOTIVE VEHICLES

S1. Purpose and scope. This standard establishes the specific requirements for safety glass for automotive vehicles.
S2. Application. This standard applies to sedans, station wagons, carryalls, light trucks up to 10,000 pounds gross vehicle weight and buses.
S3. Standard characteristics. Safety glass used in the windshield, window, door, or any other opening for vehicles covered by this standard shall conform to the requirements contained in the American Standards Association, Inc., American Standard Safety Code for Safety Glazing Materials for Glazing Motor Vehicles Operating on Land Highways, ASA Z26,1-1950. Windshields shall be glazed with laminated safety glass.
S3.1 Trucks and buses. Windshields, windows, doors, or any other openings when-ever glazing is used in trucks and buses cov-ered by this standard shall, in addition to S3, conform to the requirements contained in Interstate Commerce Commission Motor Car- rier Safety Regulations, 49 CFR, 193.60- 193.63.
S3.1.1 School buses. Windshields, win-dows, doors, or any other openings when- ever glazing is used in school buses covered by this standard shall, in addition to S3 and S3.1, conform to the requirements contained in the National Education Association Minimum Standards for School Buses.

PROPOSED RULE MAKING
[Federal Standard No. 515/9]
DUAL OPERATION OF BRAKE SYSTEM FOR AUTOMOTIVE VEHICLES

S1. Purpose and scopoe. This standard es- tablishes requirements for hydraulic brake systems installed on automotive vehicles. 
S2. Application. This standard applies to sedans, buses, carryalls, station wagons, and light trucks up to 10,000 pounds gross vehicle weight (G.V.W.). 
S3. Standard characteristics. Automotive vehicles shall be equipped with a service brake system of such design that rupture or failure of an actuating-pressure component of any single brake shall not result in com-plete loss of function of all remaining brakes of the system.  Actuating-pressure compo-nents are defined as the brake master cylin-der, brake cylinder, brake line, and brake hose. 
S3.1 In the event of rupture or failure of an actuating-pressure component to any single brake, the unaffected brakes of the system shall be capable of stopping the auto-motive vehicle in a reasonably straight line at its rated G.V.W. load.
S3.2 The service brake system shall in-clude a means for giving positive indication of partial loss of system effectiveness. 

[Federal Standard No. 515/10]
STANDARD BUMPER HEIGHTS FOR AUTOMOTIVE VEHICLES

S1. Purpose and scope. This standard establishes heigh for front and rear-bumpers and/or guards for automotive vehicles. 
S2. Application. This standard applies to sedans and station wagons.
S3. Standard characteristics. The SAE Recommended Practice for Service Brake Performance, SAE J658, and Standard for Bumper Heights SAE J681 form the basis of this standard. 
S3.1 Under static conditions, front and rear bumpers and/or guards must present a contact area between treads 16 inches above road level. 

[Federal Standard No. 515/11]
STANDARD GEAR QUADRANT (P R N D L) FOR AUTOMOTIVE VEHICLES EQUIPPED WITH AU-TOMATIC TRANSMISSIONS

S1. Purpose and scope. This standard establishes the specific requirements for standard gear quadrant (P R N D L) for au- tomotive vehicles equipped with automatic transmissions. 
S2. Application. This standard applies to sedans, stations wagons, carryalls, and light trucks up to 10,000 pounds gross vehicle weight. 
S3. Standard characteristics. The order of selection of the gear quadrant shall be park, reverse, neutral, forward drive, and low forward drive (P R N D L). Neutral shall be positioned between reverse and for- ward drive. In no case shall reverse be po- sitioned adjacent to a forward drive. Re- verse, forward drive and low forward drive may be modified to permit various gear ratios in these positions at the option of the manu- facturer. Lowest forward gear selected po- sition shall provide a braking effect for down- hill driving and the lowest selected gear shall be locked in at 25 miles per hour and under. 

[Federal Standard No 515/12]
SWEEP DESIGN OF WINDSHIELD WIPERS- WASHERS FOR AUTOMOTIVE VEHICLES

S1. Purpose and scope. This standard establishes test procedures and minimum performance requirements for automotive vehicle windshield wiping systems.
S2. Application. This standard applies to sedan, buses, station wagons, carryalls, and light trucks up to 10,000 G.V.W., with fixed-type windshields. 
S3. Requirements. The windshield wiper system shall be driven by a multispeed elec- tric motor controlled by a conveniently lo- cated switch. All other windshield wiper requirements shall conform to SAE Recom- mended Practice for Passenger Car Wind- shield Wiper Systems, SAE J903. 
S3.1 This windshield washer system shall be provided with a nonrigid container with a capacity of at least 48 liquid ounces of fluid. The fluid shall be applied to the windshield by pressure generated by vacuum or other methods. The washer shall be operated by either foot or hand control.
S3.2 Tests: All tests for the windshield wiper system shall conform to SAE Recom- mended Practice SAE J903. 

[Federal Standard No. 515/13]
GLARE REDUCTION SURFACES-INSTRUMENT PANEL AND WINDSHIELD WIPERS FOR AUTO- MOTIVE VEHICLES

S1. Purpose and scope. This standard es- tablishes glare limits for appearance fin- ishes of instrument panels and windshield wiper components in and adjacent to the operator's field of view to achieve the most practical reduction of distracting reflectance for automotive vehicles. 
S2. Application. This standard applies to sedans, buses, carryalls, station wagons, and light trucks up to 10,000 pounds gross vehicle weight (G.V.W.).
S3. Standard characteristics. Standard methods, tentative methods, and tentative recommended practices of the American So- ciety for Testing and Materials, ASTM Desig- nation D 523, D 1535, E 179; the Munsell Color Co., Munsell Book of Color; and the SAE Recommended Standard SAE J826, form the basis for this Federal standard. 
S3.1 Definitions.
S3.1. Field of view. With the operator's seat i its rearmost position, the operator's field of view is defined as that area forward of a line extending to the sides of the vehicle from the point at which the back pan of the SAE J826 three-dimensional manikin makes contact with the operator's seat back. 
S3.1.2 Glare. The visual effect of any source of light in the field of view that either dilutes or competes with the central atten- tion signal on which attention is being focused. 
S3.1.3 Specular gloss. Ratio of flux re- flected in the specular direction, for specified size of source and receptor, to incident flux. 
S3.1.4 Luminous reflectance. Ratio of flux reflected in all directions, to incident flux. 
S3.1.5 Saturation. The attribute of color perception that expresses the degree of de- parture from gray to the same lightness. All grays have zero saturation. 
S3.1.6 Chromatic glare. The product of the Munsell value by the Munsell chroma (V x C). 
S3.2 Instrument panels. The specular gloss of instrument panel top surfaces which can produce glare in the windshield shall not exceed 6.0 units maximum, measured by the 60-degree method fo ASTM D 523. 
S3.3 Windshield wiper arms and blades. The specular gloss of windshield wiper arms and wiper blades i the operator's field of view shall not exceed 100 units maximum, measured by the 60-degree method of ASTM D 523. 
S3.4 Luminous reflectance. The total luminous reflectance of instrument panel top surfaces for zero (0) degrees incidence shall not exceed 30 percent (Munsell value less than 6.0/), measured as described by ASTM E 179-61.
S3.5 Saturation. The Munsell chroma of instrument panel top surfaces shall be not more than/6.
S3.6 Chromatic glare. The product of the Munsell values by Munsell chroma of the in- struent panel top surfaces that can produce glare in the windshield shall not exceed 25 maximum, as defined in ASTM D 1535-62. 

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