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WB-15 Design Vehicle
2 Number of Lanes Table matches Green Book Exhibit 3-47
7.2 m Traveled Way for two lanes
Traveled Way width: 7.2 meters
Curve Design Speed (km/h)
Radius (m) 20 30 40 50 60 70 80 90
7000 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
6000 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
5000 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
4000 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
3000 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
2500 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
2000 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1500 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1
1400 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1
1300 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.1
1200 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.2
1100 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.2
1000 0.0 0.0 0.0 0.1 0.1 0.1 0.2 0.2
900 0.0 0.0 0.1 0.1 0.1 0.2 0.2 0.2
800 0.0 0.1 0.1 0.1 0.2 0.2 0.2 0.3
750 0.0 0.1 0.1 0.1 0.2 0.2 0.3 0.3
700 0.0 0.1 0.1 0.2 0.2 0.2 0.3 0.3
600 0.1 0.1 0.2 0.2 0.3 0.3 0.3 0.4
500 0.1 0.2 0.2 0.3 0.3 0.4 0.4 0.5
400 0.2 0.3 0.3 0.4 0.4 0.5 0.5 0.6
300 0.3 0.4 0.5 0.5 0.6 0.6 0.7 0.8
250 0.5 0.5 0.6 0.6 0.7 0.8 0.8
200 0.6 0.7 0.7 0.8 0.9 1.0 1.0
175 0.7 0.8 0.9 0.9 1.0 1.1
150 0.9 0.9 1.0 1.1 1.2 1.3
140 0.9 1.0 1.1 1.2 1.3
130 1.0 1.1 1.2 1.3 1.4
120 1.1 1.2 1.3 1.4 1.5
110 1.2 1.3 1.4 1.5 1.6
100 1.3 1.4 1.5 1.6 1.7
90 1.5 1.6 1.7 1.8
80 1.7 1.8 1.9 2.0
70 2.0 2.1 2.2 2.3
60 2.3 2.5 2.6
50 2.8 3.0 3.1
40 3.6 3.7 3.9
30 4.9 5.0
25 5.9 6.1
20 7.7 7.9
15 11.3
240 0.5 0.5 0.6 0.7 0.7 0.8 0.9 0.9
Min R: 5 20 35 65 100 145 195 255
Note: All values in meters
Note: Values less than 0.6 meter may be disregarded
eMax 12.0% Maximum superelevation (sets minimum radius)
_C 0.9 Lateral clearance per vehicle (m)
User input lateral clearance per vehicle (m)
Table matches Green Book Exhibit 3-47
Traveled Way width: 7.2 meters
Design Speed (km/h) C_table
100 110 120 130 Wn C
0.0 0.0 0.0 0.0 5.4 0.45
0.0 0.0 0.0 0.0 6 0.6
0.0 0.0 0.0 0.0 6.6 0.75
0.0 0.0 0.0 0.0 7.2 0.9
0.0 0.0 0.0 0.1
0.0 0.1 0.1 0.1
0.1 0.1 0.1 0.1
0.1 0.2 0.2 0.2
0.1 0.2 0.2 0.2
0.2 0.2 0.2 0.2
0.2 0.2 0.2 0.3
0.2 0.2 0.3 0.3
0.2 0.3 0.3 0.3
0.3 0.3 0.3 0.4
0.3 0.3 0.4 0.4 Traveled Way Widening
0.3 0.4 0.4 0.4 w widening = Wc - Wn
0.4 0.4 0.4 0.5 Wc Width on curve
0.4 0.5 0.5 Wn Width on tangent
0.5 0.5
0.6 Wc = N(U+C)+(N-1)FA+Z
N Number of lanes
U Track width of design vehicle
C Lateral clearance
FA Width of front overhang of inner-lane vehicle
Z Extra width allowance
1 1.1 1.1 1.2
330 415 540 665
Vehicle front to rear wheels
Side Friction <f_table> DesVeh u Σ Li ² A L direction
km/h f track width front overhangWheelbase
15 0.4 P 1.83 11.2225 0.91 3.35 1
20 0.35 SU 2.44 37.21 1.22 6.1 1
30 0.28 BUS-12 2.59 62.17323 1.83 7.32 1
40 0.23 BUS-14 2.59 75.5161 1.83 8.08 1
50 0.19 CITY-BUS 2.59 58.0644 2.13 7.62 1
60 0.17 S-BUS-11 2.44 42.1201 0.76 6.49 1
70 0.15 S-BUS-12 2.44 37.21 2.13 6.1 1
80 0.14 A-BUS 2.59 57.6124 2.62 6.71 1
90 0.13 WB-12 2.44 74.889 0.91 3.81 1
100 0.12 WB-15 2.59 131.5885 0.91 4.45 1
110 0.11 WB-19 2.59 187.6781 1.22 6.58 1
120 0.09 WB-20 2.59 211.2301 1.22 6.58 1
130 0.08 WB-20D 2.59 113.2115 0.71 3.35 1
WB-30T 2.59 166.0379 0.71 3.35 1
WB-33D 2.59 325.7184 0.71 4.36 1
= Wc - Wn MH 2.44 37.21 1.22 6.1 1
P/T 2.44 37.8565 0.91 3.35 1
P/B 2.44 29.797 0.91 3.35 1
MH/B 2.44 54.746 1.22 6.1 1
Wc = N(U+C)+(N-1)FA+Z
Track width of design vehicle = u + R - sqrt(R^2 - sum(Li^2))
Width of front overhang of inner-lane vehicle = sqrt(R^2+A(2L+A)) - R
= 0.1(V/sqrt(R))
L1 direction L2 direction L3 direction L4 direction L5
3.35
6.1
7.885
8.69
7.62
6.49
6.1
6.71 -1 1.89 1 4.02
3.81 1 7.77
3.81 1 10.82
5.95 1 12.34
5.95 1 13.26
3.35 2 7.01 -1 0.91 1 2.13
3.35 -1 0.15 3 7.01 -2 0.91 2 2.13
3.71 -1 0.15 2 12.34 -1 1.37 1 3.05
6.1
3.35 -1 1.52 1 5.38
3.35 -1 1.52 1 4.57
6.1 -1 1.83 1 4.57
WB-50 Design Vehicle
2 Number of Lanes Table matches Green Book Exhibit 3-47
24 ft Traveled Way for two lanes
Traveled Way width: 24 feet
Curve Design Speed (MPH)
Radius (ft) 15 20 25 30 35 40 45 50
25000 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
20000 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
15000 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
10000 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
7500 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
7000 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
6500 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
6000 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
5500 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
5000 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
4500 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1
4000 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.2
3500 0.0 0.0 0.0 0.0 0.0 0.1 0.2 0.3
3000 0.0 0.0 0.0 0.0 0.1 0.2 0.3 0.4
2500 0.0 0.0 0.1 0.2 0.3 0.4 0.5 0.6
2000 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.9
1800 0.2 0.3 0.4 0.5 0.6 0.8 0.9 1.0
1600 0.3 0.4 0.5 0.7 0.8 0.9 1.0 1.2
1400 0.4 0.6 0.7 0.8 1.0 1.1 1.2 1.4
1200 0.7 0.8 0.9 1.1 1.2 1.4 1.5 1.7
1000 0.9 1.1 1.3 1.4 1.6 1.7 1.9 2.0
900 1.1 1.3 1.5 1.6 1.8 2.0 2.1 2.3
800 1.4 1.5 1.7 1.9 2.1 2.2 2.4 2.6
750 1.5 1.7 1.9 2.0 2.2 2.4 2.6 2.8
700 1.7 1.8 2.0 2.2 2.4 2.6 2.8 3.0
600 2.1 2.3 2.5 2.7 2.9 3.1 3.3
500 2.6 2.8 3.1 3.3 3.5 3.7 3.9
450 3.0 3.2 3.4 3.7 3.9 4.1
400 3.4 3.7 3.9 4.2 4.4 4.7
350 4.0 4.3 4.5 4.8 5.1
300 4.8 5.1 5.3 5.6 5.9
250 5.8 6.2 6.5 6.8
200 7.4 7.8 8.2 8.5
175 8.6 9.0 9.4
150 10.1 10.6 11.0
125 12.3 12.8 13.2
100 15.7 16.2
75 21.6 22.2
50 36.2
225 6.6 6.9 7.2 7.6 7.9 8.2 8.6 8.9
Min R: 35 70 120 190 270 380 500 640
Note: All values in feet
Note: Values less than 2 feet may be disregarded
eMax 12.0% Maximum superelevation (sets minimum radius)
_C 3 Lateral clearance per vehicle (ft)
User input lateral clearance per vehicle (ft)
Table matches Green Book Exhibit 3-47
Traveled Way width: 24 feet
Design Speed (MPH) C_table
55 60 65 70 75 80 Wn
0.0 0.0 0.0 0.0 0.0 0.0 18
0.0 0.0 0.0 0.0 0.0 0.0 20
0.0 0.0 0.0 0.0 0.0 0.0 22
0.0 0.0 0.0 0.0 0.0 0.0 24
0.0 0.0 0.0 0.0 0.1 0.1
0.0 0.0 0.0 0.0 0.1 0.2
0.0 0.0 0.0 0.1 0.2 0.2
0.0 0.0 0.1 0.1 0.2 0.3
0.0 0.1 0.1 0.2 0.3 0.3
0.1 0.1 0.2 0.3 0.4 0.4
0.1 0.2 0.3 0.4 0.4 0.5
0.2 0.3 0.4 0.5 0.6 0.6
0.3 0.4 0.5 0.6 0.7 0.8
0.5 0.6 0.7 0.8 0.9 0.9
0.7 0.8 0.9 1.0 1.1 1.2 Traveled Way Widening
1.0 1.1 1.2 1.3 1.4 w
1.1 1.2 1.3 1.5 1.6 Wc
1.3 1.4 1.5 1.7 Wn
1.5 1.7 1.8
1.8 2.0
2.2 2.4 N
2.5 U
C
FA
Z
9.2 9.6 9.9 10.2 10.6 10.9
805 1000 1225 1485 1785 2135
Vehicle
Side Friction <f_table> DesVeh u Σ Li ² A
C MPH f track width front overhang
1.5 10 0.38 P 6 121 3
2 15 0.32 SU 8 400 4
2.5 20 0.27 BUS-40 8.5 668.2225 6
3 25 0.23 BUS-45 8.5 812.25 6
30 0.2 CITY-BUS 8.5 625 7
35 0.18 S-BUS-36 8 453.69 2.5
40 0.16 S-BUS-40 8 400 7
45 0.15 A-BUS 8.5 619.8 8.6
50 0.14 WB-40 8 806.5 3
55 0.13 WB-50 8.5 1416.5 3
60 0.12 WB-62 8.5 2020.5 4
65 0.11 WB-65/67 8.5 2272.5 4
70 0.1 WB-67D 8.5 1219 2.33
75 0.09 WB-100T 8.5 1787.75 2.33
Traveled Way Widening 80 0.08 WB-109D 8.5 3508.84 2.33
widening = Wc - Wn MH 8 400 4
Width on curve P/T 8 409.29 3
Width on tangent P/B 8 321 3
MH/B 8 589 4
Wc = N(U+C)+(N-1)FA+Z
Number of lanes
Track width of design vehicle = u + R - sqrt(R^2 - sum(Li^2))
Lateral clearance
Width of front overhang of inner-lane vehicle = sqrt(R^2+A(2L+A)) - R
Extra width allowance = V/sqrt(R)
front to rear wheels
L direction L1 direction L2 direction L3 direction L4
Wheelbase
11 1 11
20 1 20
24 1 25.85
26.5 1 28.5
25 1 25
21.3 1 21.3
20 1 20
22 1 22 -1 6.2 1 13.2
12.5 1 12.5 1 25.5
14.6 1 12.5 1 35.5
21.6 1 19.5 1 40.5
21.6 1 19.5 1 43.5
11 1 11 2 23 -1 3 1 7
11 1 11 -1 0.5 3 23 -2 3
14.3 1 12.2 -1 0.5 2 40.5 -1 4.5
20 1 20
11 1 11 -1 5 1 17.7
11 1 11 -1 5 1 15
20 1 20 -1 6 1 15
direction L5
2 7
1 10
