Cal. Code Regs. tit. 13, § 736
The luminous intensity of a deceleration lamp with the bulbs operated at mean spherical candela and tested as specified in Article 4 of this subchapter shall meet the photometric requirements in Table III after the sample has been mechanically tested in the order shown in Section 733.
TABLE III. PHOTOMETRIC REQUIREMENTS FOR DECELERATION SIGNAL LAMPS
Test point coordinates
Cd
Vertical
Horizontal
Max
Min
10L
70
25
10U
V
200
60
10R
70
25
20L
40
15
10L
200
60
5L
600
200
5U
V
800
350
5R
600
200
10R
200
60
20R
40
15
20L
40
15
10L
200
60
5L
800
350
H
V
1,300
600
5R
800
350
10R
200
60
20R
40
15
20L
40
15
10L
200
60
5L
600
200
5D
V
800
350
5R
600
200
10R
200
60
20R
40
15
10L
70
25
10D
V
200
60
10R
70
25
Note: Authority cited: Section 26103, Vehicle Code. Reference: Sections 24012 and 26103, Vehicle Code.