Table 1: Typical night time traffic stream data.
Dry Night-time |
Rainfall Intensity at Night on Roadway without Light |
Light Rain i≤2.5mm/h |
Moderate Rain i≤10mm/h |
Heavy Rain i≤50mm/h |
u |
q |
k |
u |
q |
k |
u |
q |
k |
u |
q |
k |
70 |
210 |
3.0 |
49 |
195 |
4.0 |
57 |
240 |
4.2 |
62 |
255 |
4.1 |
81 |
300 |
3.7 |
65 |
375 |
5.8 |
50 |
143 |
2.9 |
52 |
263 |
5.0 |
80 |
300 |
3.8 |
45 |
240 |
5.4 |
62 |
210 |
3.4 |
65 |
165 |
2.5 |
70 |
195 |
2.8 |
65 |
165 |
2.5 |
70 |
240 |
3.4 |
47 |
60 |
1.3 |
87 |
180 |
2.1 |
68 |
248 |
3.7 |
65 |
180 |
2.8 |
74 |
135 |
1.8 |
62 |
195 |
3.1 |
73 |
210 |
2.9 |
76 |
150 |
2.0 |
49 |
233 |
4.7 |
85 |
450 |
5.3 |
61 |
173 |
2.8 |
63 |
90 |
1.4 |
56 |
180 |
3.2 |
75 |
323 |
4.3 |
60 |
480 |
8.0 |
50 |
135 |
2.7 |
53 |
158 |
3.0 |
66 |
195 |
3.0 |
70 |
203 |
2.9 |
64 |
150 |
2.3 |
40 |
90 |
2.3 |
60 |
293 |
4.9 |
68 |
383 |
5.6 |
60 |
150 |
2.5 |
82 |
188 |
2.3 |
75 |
248 |
3.3 |
52 |
120 |
2.3 |
75 |
150 |
2.0 |
55 |
195 |
3.5 |
81 |
248 |
3.1 |
57 |
300 |
5.3 |
55 |
120 |
2.2 |
62 |
225 |
3.6 |
Note that in the table below, u denotes speed-km/h, q denotes flow-veh/h, k denotes density-veh/km.