Modeling Acceleration and Deceleration Rates for Two-Lane Rural Highways Using Global Positioning System Data
Table 4
Summary of road segment characteristics.
Roadway segment
Length (km)
Statistic
R (m)
Lc (m)
Da (degree)
Dc (degree)
TL (m)
NH 161
3.38
Mean
454.62
346.86
45.55
3.00
1570
SD
185.72
181.84
17.45
1.27
1,031.88
Range
200–900
90–785
20–75
1.35–5.75
465–3,655
SH 17
46.78
Mean
225
170.25
44.73
5.44
545
SD
64.55
25.54
6.51
1.66
376.37
Range
150–300
135–200
35–55
3.80–7.65
100–1,065
SH 53
12.7
Mean
150
86.95
35.62
9.51
364.29
SD
104.87
60.24
12.19
4.62
196.64
Range
60–500
45–310
20–65
2.45–19.10
20–840
SH 135
15.9
Mean
240.91
117.99
34.09
6.35
856.82
SD
193.52
48.03
13.52
2.88
392.06
Range
90–800
60–225
5–55
1.40–12.75
220–1,420
MDR
3.2
Mean
100
68.87
46.53
14.56
405.63
SD
67.33
27.56
21.45
6.30
290.46
Range
60–200
40–105
20–75
5.70–19.10
120–1,040
Note. R: radius, Lc: curve length, Da: deflection angle, Dc: degree of curve, TL: tangent length, NH: national highway, SH: state highway, and MDR: major district road.
