Document ID: chunk:federal_register_of_legislation:F2023C00919:body:0:p25
Version: federal_register_of_legislation:F2023C00919
Segment Type: other
Provision Reference: 
Character Range: 80451–83458

the chromaticity coordinates (x,y)4 of the light reflected that lie inside the chromaticity areas defined by the boundaries:
A12  green boundary      y = 1.417 x - 0.347
A23  the spectral locus
A34  red boundary        y = 0.390
A41  white boundary      y = 0.790 - 0.670 x

With intersection points:
    x      y
A1  0.545  0.425
A2  0.557  0.442
A3  0.609  0.390
A4  0.597  0.390

2.30.4.                          "Red" means the chromaticity coordinates (x,y)4 of the light reflected that lie inside the chromaticity areas defined by the boundaries:
R12  yellow boundary     y = 0.335
R23  the spectral locus
R34  the purple line
R41  purple boundary     y = 0.978 - x

With intersection points:
    x      y
R1  0.643  0.335
R2  0.665  0.335
R3  0.735  0.265
R4  0.720  0.258

2.31.                                Day-time Colour of the light reflected from a device
2.31.1.                          "White" means the chromaticity coordinates (x,y)4 of the light reflected that lie inside the chromaticity areas defined by the boundaries:
W12  violet boundary  y = x - 0.030
W23  yellow boundary  y = 0.740 – x
W34  green boundary   y = x + 0,050
W41  blue boundary    y = 0.570 – x

With intersection points:
    x      y
W1  0.300  0.270
W2  0.385  0.355
W3  0.345  0.395
W4  0.260  0.310"

2.31.2.                          "Yellow" means the chromaticity coordinates (x,y)4 of the light reflected that lie inside the chromaticity areas defined by the boundaries:
Y12  red boundary        y = 0.534 x + 0.163
Y23  white boundary      y = 0.910 - x
Y34  green boundary      y =1.342 x - 0.090
Y41  the spectral locus

With intersection points:
    x      y
Y1  0.545  0.454
Y2  0.487  0.423
Y3  0.427  0.483
Y4  0.465  0.534

2.31.3.                          "Red" means the chromaticity coordinates (x,y)4 of the light reflected that lie inside the chromaticity areas defined by the boundaries:
R12  red boundary        y = 0.346 – 0.053 x
R23  purple boundary     y = 0.910 – x
R34  yellow boundary     y = 0.350
R41  the spectral locus

With intersection points:
    x      y
R1  0.690  0.310
R2  0.595  0.315
R3  0.560  0.350
R4  0.650  0.350"

2.32.                                Day-time Colour of the fluorescent a device
2.32.1.                          "Red" means the chromaticity coordinates (x,y)4 of the light reflected that lie inside the chromaticity areas defined by the boundaries:
FR12  red boundary        y = 0.346 – 0.053 x
FR23  purple boundary     y = 0.910 – x
FR34  yellow boundary     y = 0.315 + 0.047 x
FR41  the spectral locus

With intersection points:
     x      y
FR1  0,690  0,310
FR2  0,595  0,315
FR3  0,569  0,341
FR4  0,655  0,345

2.33.                                "Rear-end collision alert signal (RECAS)" means an automatic signal given by the leading vehicle to the following vehicle. It warns that the following vehicle needs to take emergency action to avoid a collision.
2.34.                                "Gonio(photo)meter system (if not