Regulation No 125 of the Economic Commission for Europe of the United Nations (UN/ECE) — Uniform provisions concerning the approval of motor vehicles with regard to the forward field of vision of the motor vehicle driver
1. SCOPE AND PURPOSE
2. DEFINITIONS
3. APPLICATION FOR APPROVAL
4. APPROVAL
5. SPECIFICATIONS
5.1. Driver’s field of vision.
5.2. Position of the V points
V-point |
X |
Y |
Z |
V1 |
68 mm |
–5 mm |
665 mm |
V2 |
68 mm |
–5 mm |
589 mm |
5.3. Position of the P points
Point P |
X |
Y |
Z |
P1 |
35 mm |
–20 mm |
627 mm |
P2 |
63 mm |
47 mm |
627 mm |
Pm |
43,36 mm |
0 mm |
627 mm |
Horizontal seat-adjustment range |
Δx |
108 to 120 mm |
–13 mm |
121 to 132 mm |
–22 mm |
133 to 145 mm |
–32 mm |
146 to 158 mm |
–42 mm |
more than 158 mm |
–48 mm |
5.4. Correction for design seat-back angles other than 25°
Seat-back angle (in °) |
Horizontal coordinates Δx |
Vertical coordinates Δz |
5 |
– 186 mm |
28 mm |
6 |
– 177 mm |
27 mm |
7 |
– 167 mm |
27 mm |
8 |
– 157 mm |
27 mm |
9 |
– 147 mm |
26 mm |
10 |
– 137 mm |
25 mm |
11 |
– 128 mm |
24 mm |
12 |
– 118 mm |
23 mm |
13 |
– 109 mm |
22 mm |
14 |
–99 mm |
21 mm |
15 |
–90 mm |
20 mm |
16 |
–81 mm |
18 mm |
17 |
–72 mm |
17 mm |
18 |
–62 mm |
15 mm |
19 |
–53 mm |
13 mm |
20 |
–44 mm |
11 mm |
21 |
–35 mm |
9 mm |
22 |
–26 mm |
7 mm |
23 |
–18 mm |
5 mm |
24 |
–9 mm |
3 mm |
25 |
0 mm |
0 mm |
26 |
9 mm |
–3 mm |
27 |
17 mm |
–5 mm |
28 |
26 mm |
–8 mm |
29 |
34 mm |
–11 mm |
30 |
43 mm |
–14 mm |
31 |
51 mm |
–18 mm |
32 |
59 mm |
–21 mm |
33 |
67 mm |
–24 mm |
34 |
76 mm |
–28 mm |
35 |
84 mm |
–32 mm |
36 |
92 mm |
–35 mm |
37 |
100 mm |
–39 mm |
38 |
108 mm |
–43 mm |
39 |
115 mm |
–48 mm |
40 |
123 mm |
–52 mm |