Table 2

Descriptions of incident related variables

VariableDescriptionCodes-valuesNo. of incidentsAverage duration (minutes)
Day of the weekDay of the incident1-Monday
2-Tuesday
3-Wednesday
4-Thursday
5-Friday
6-Saturday
7-Sunday		58
44
46
48
74
75
46		12.7
12.8
13.1
13
12.9
13
12.9
Hour of the dayHour of the incident0-early morning-00:00∼07:00
1-morning peak-7:00∼9:00
2-morning-09:00∼11:00
3-noon-11:00∼13:00
4-afternoon-13:00∼17:00
5-evening peak-17:00∼19:00
6-evening-19:00∼24:00		5
56
60
60
129
48
33		13
13.9
12.8
12.8
12.7
12.8
12.8
Weather conditionWeather0-sunny
1-rainy		344
47		12.8
12.8,
Traffic conditionTraffic condition0-unblocked
1-slow passage
2-congestion		187
200
4		12.9
12.7
12.4
Location typeType of the incident location0-ramp
1-roadside
2-middle of the road
3-unknown		124
54
53
160		12.8
12.7
12.8
12.7
Incident typeIncident category0-multi vehicle
1-dual vehicle
2-broke down
3-wrong operation
4-fire		48
226
113
1
3		12.8
12.7
12.8
8
12.9
Occupied lanesNumber of lanes occupied by the incident0-not occupying lanes
1- occupying one lane
2- occupying two lanes
3- occupying three lanes
4- occupying four lanes		3
365
22
0
1		7
12.8
12.8
--
2
Police presenceWhether the police are required0-no
1-yes		308
83		12.7
12.8
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