Section 817 - Photometric Test RequirementsThe luminous intensity of warning lamps tested as specified in Article 4 of this subchapter, with a reaim tolerance of ± 0.5 degree vertical and ± 1.0 degree horizontal allowed at each test point, shall be as follows:
(a) Steady-burning Warning Lamps. Steady-burning warning lamps, and flashing warning lamps which alternate between on and off by electrically controlling the current supplied to the lamp, shall meet the requirements in Table I. The photometric output of flashing lamps shall be reported only while the lamp is on. Warning lamp units shall be aimed for this test so the maximum intensity is on the H-V axis. Warning lamp assemblies shall be mounted for this test in accordance with Section 657. TABLE I. MINIMUM CANDELA FOR STEADY-BURNING WARNING LAMPS AND FLASHING WARNING LAMPS WHICH ALTERNATE BETWEEN ON AND OFF BY ELECTRICALLY CONTROLLING THE CURRENT
Test point coordinates | Class A Lamps | Class B Lamps | Class C Lamps | Class D Lamps |
Vertical | Horizontal | Red | Red | Yellow | Blue | Red | Yellow | Blue | Red |
| 5L | 15 | 20 | 50 | 10 | 10 | 25 | 5 | 5 |
10U | V | 15 | 50 | 125 | 25 | 25 | 65 | 13 | 12 |
| 5R | 15 | 20 | 50 | 10 | 10 | 25 | 5 | 5 |
| 20L | 10 | 20 | 50 | 10 | 150 | 375 | 75 | 5 |
| 10L | 25 | 50 | 125 | 25 | 300 | 750 | 150 | 12 |
| 5L | 50 | 100 | 250 | 50 | 300 | 750 | 150 | 25 |
5U | V | 80 | 150 | 375 | 75 | 300 | 750 | 150 | 40 |
| 5R | 50 | 100 | 250 | 50 | 300 | 750 | 150 | 25 |
| 10R | 25 | 50 | 125 | 25 | 300 | 750 | 150 | 12 |
| 20R | 10 | 20 | 50 | 10 | 150 | 375 | 75 | 5 |
| 30L | -- | -- | -- | -- | 30 | 75 | 15 | -- |
| 20L | 30 | 30 | 75 | 15 | 180 | 450 | 90 | 10 |
| 10L | 300 | 75 | 190 | 38 | 400 | 1,000 | 200 | 15 |
| 5L | 500 | 200 | 500 | 100 | 500 | 1,250 | 250 | 500 |
| 2 1/2L | 2,000 | -- | -- | -- | -- | -- | -- | 1,500 |
H | V | 3,000 | 300 | 750 | 150 | 600 | 1,500 | 300 | 3,000 |
| 2 1/2R | 2,000 | -- | -- | -- | -- | -- | -- | 1,500 |
| 5R | 500 | 200 | 500 | 100 | 500 | 1,250 | 250 | 500 |
| 10R | 300 | 75 | 190 | 38 | 400 | 1,000 | 200 | 15 |
| 20R | 30 | 30 | 75 | 15 | 180 | 450 | 90 | 10 |
| 30R | -- | -- | -- | -- | 30 | 75 | 15 | -- |
| 30L | -- | -- | -- | -- | 30 | 75 | 15 | -- |
| 20L | 10 | 20 | 50 | 10 | 200 | 500 | 100 | 5 |
| 10L | 25 | 50 | 125 | 25 | 300 | 750 | 150 | 12 |
| 5L | 50 | 100 | 250 | 50 | 450 | 1,100 | 275 | 25 |
5D | V | 80 | 150 | 375 | 75 | 450 | 1,100 | 275 | 40 |
| 5R | 50 | 100 | 250 | 50 | 450 | 1,100 | 275 | 25 |
| 10R | 25 | 50 | 125 | 25 | 300 | 750 | 150 | 12 |
| 20R | 10 | 20 | 50 | 10 | 200 | 500 | 100 | 5 |
| 30R | -- | -- | -- | -- | 30 | 75 | 15 | -- |
| 5L | 15 | 20 | 50 | 10 | 40 | 100 | 20 | 5 |
10D | V | 15 | 50 | 125 | 25 | 40 | 100 | 20 | 12 |
| 5R | 15 | 20 | 50 | 10 | 40 | 100 | 20 | 5 |
NOTE: Maximum anywhere in yellow shall not exceed 4,000 cd over any area larger than that generated by a radius rotated 0.25 deg.
(b) Revolving Warning Lamps. Revolving warning lamps shall meet the requirements in either Table II or Table IV with the required test voltage applied to the input terminals of the complete assembly. A revolving lamp that is designed to project a signal throughout a 360 degree horizontal angle shall be tested with the lamp assembly turned about its vertical axis to the location where the maximum candela reading from the optical unit is reduced the most by any variations in density or shape of the transparent cover or by obstructions in the lamp assembly. A revolving warning lamp that does not project light through a 360 degree horizontal angle shall comply photometrically about those axes straight to the front, sides, and rear of a vehicle to which the lamp is designed to provide a warning signal. As the lamp rotates, the full projected area of the reflector of each light unit shall be visible along the beam axis as the center of the beam moves from 20 degrees left to 20 degrees right of the device axis. TABLE II. MINIMUM CANDELA FOR REVOLVING WARNING LAMPS
Test point coordinates | | | |
Vertical | Horizontal | Red | Yellow | Blue |
7.5U | V | 50 | 130 | 25 |
5U | V | 500 | 1,250 | 250 |
2.5U | V | 3,000 | 7,500 | 1,500 |
H | V | 5,000 | 12,500 | 2,500 |
2.5D | V | 3,000 | 7,500 | 1,500 |
5D | V | 500 | 1,250 | 250 |
7.5D | V | 50 | 130 | 25 |
(c) Oscillating Warning Lamps. Oscillating warning lamps shall meet the requirements in Table III with the required test voltage applied to the input terminals of the complete assembly. TABLE III. MINIMUM CANDELA FOR OSCILLATING WARNING LAMPS
Test point coordinates | | | |
Vertical | Horizontal | Red | Yellow | Blue |
7.5U | V | 50 | 130 | 25 |
5U | V | 500 | 1,250 | 250 |
2.5U | V | 3,000 | 7,500 | 1,500 |
| 20L | 500 | 1,250 | 250 |
| 10L | 1,200 | 3,000 | 600 |
| 5L | 3,300 | 8,250 | 1,650 |
H | V | 5,000 | 12,500 | 2,500 |
| 5R | 3,300 | 8,250 | 1,650 |
| 10R | 1,200 | 3,000 | 600 |
| 20R | 500 | 1,250 | 250 |
2.5D | V | 3,000 | 7,500 | 1,500 |
5D | V | 500 | 1,250 | 250 |
7.5D | V | 50 | 130 | 25 |
(d) Gaseous Discharge Warning Lamps. Gaseous discharge warning lamps shall meet the requirements in Table IV with the required test voltage applied to the input terminals of the complete assembly. Lamps producing 360 degree light output shall be rotated in the photometric test to the point where the lowest H-V reading is recorded, at which location the lamp shall meet the flash energy requirements. The candela-seconds shall be reported as the average for ten consecutive flashes.(e) Alternative Technologies. Nothing in this standard shall be construed to prohibit the use of any appropriate technology for light sources provided the appropriate photometric and other requirements for the type of lamp are met. Steady-burning warning lamps, and flashing lamps which alternate between on and off by interrupting the electrical current to the lamp, shall meet the photometric requirements of Class A, B, C or D as shown in Table I. Warning lamps which approximate or simulate the appearance of revolving warning lamps shall meet the photometric requirements of Table II. Warning lamps which approximate or simulate the appearance of oscillating warning lamps shall meet the photometric requirements of Table III.(f) Removal from Service. Any warning lamp assembly which noticeably fails to function properly shall be removed from service. Warning lamp assemblies which utilize multiple light sources shall be removed from service if any individual light source fails to function properly. TABLE IV. MINIMUM CANDELA-SECONDS FOR GASEOUS DISCHARGE WARNING LAMPS
Test point coordinates | | | |
Vertical | Horizontal | Red | Yellow | Blue |
7.5U | V | 5 | 12 | 3 |
5U | V | 10 | 25 | 5 |
2.5U | V | 30 | 75 | 15 |
| 20L | 5 | 12 | 3 |
| 10L | 12 | 30 | 6 |
| 5L | 33 | 82 | 17 |
H | V | 50 | 125 | 25 |
| 5R | 33 | 82 | 17 |
| 10R | 12 | 30 | 6 |
| 20R | 5 | 12 | 3 |
2.5D | V | 30 | 75 | 15 |
5D | V | 10 | 25 | 5 |
7.5D | V | 5 | 12 | 3 |
NOTE: The L and R test points do not apply to 360-deg lamps.
Cal. Code Regs. Tit. 13, § 817
1. Amendment filed 11-25-2002; operative 12-25-2002 (Register 2002, No. 48). Note: Authority cited: Section 26103, Vehicle Code. Reference: Sections 24012 and 26103, Vehicle Code.
1. Amendment filed 11-25-2002; operative 12-25-2002 (Register 2002, No. 48).