|
Variable | Value |
|
Temporal characteristics | |
Peak hour | Binary variable: 1: peak hours (7:00–9:00 and 17:00–19:00); 0: nonpeak hours |
Day first shift | Binary variable: 1: 22:00–6:00; 0: 6:00–22:00 |
Weekday | Binary variable: 1: weekday; 0: weekend |
Season | Categorical variable: 1: spring (reference in estimation), 2: summer, 3: autumn, and 4: winter |
Incident characteristics | |
Incident type | Categorical variable: 1: more common crash (reference in estimation), 2: rear-end crash, 3: crash involving pedestrian or bicycle, 4: collision with stationary object, 5: overturned vehicle, and 6: others |
Treatment type | Binary variable: 1: resolved by police, 0: resolved by drivers involved in incident |
Number of vehicles involved | Binary variable: 1: 1 or 2, 0: greater than 2 |
Taxi | Binary variable: 1: incident involving taxi; 0: no taxi |
Bus | Binary variable: 1: incident involving bus; 0: no bus |
Truck | Categorical variable: 1: incident involving small truck, 2: incident involving large truck, 0: no truck (reference in estimation) |
Geographic characteristics | |
Distance | Continuous variable: distance from city center, unit: km |
Others | |
Congestion | Binary variable: 1: congested traffic condition, 0: noncongested traffic condition |
Preparation time | Continuous variable for travel time and clearance time analysis |
Travel time | Continuous variable for clearance time analysis |
|