|
| 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 |
|
