|
| Geometric-infrastructure features |
|
| Road surface of the intersections area | Paved | Annual average daily traffic volume on a major road, vehicles per day | 100–19,500 | Intersections that offer a sufficient sight distance for drivers at stop- or yield-controlled approaches | 30% of the total number investigated |
| Mean value of the approach width, m | 2.70 | Annual average daily traffic volume on a minor road, vehicles per day | 60–4,300 | Number of lane on both the major and minor road legs | 1 per travel direction |
| Mean value of the left/right-turn lane width, m | 2.90 | Mean speed on the major road, km/h | 90 | Mean speed on the minor road, km/h | 45 |
|
| Crash features |
| Minimum value | Mean value | Maximum value | Std.Dev. |
| Number of crashes observed at each intersection | 1 | 2 | 5 | 0.71 |
| Number of injury crashes | 0 | 1 | 3 | 0.69 |
| Number of nonfatal injuries | 0 | 2 | 8 | 1.85 |
| Number of property damage only crashes | 1 | 0.5 | 2 | 0.45 |
|
| Main crash types identified | Head-on/side collisions (63% of the total number of crashes) | Single-vehicle crashes (21% of the total number of crashes) | Rear-end collisions (16% of the total number of crashes) | |
| Crashes during daylight hours | 75% | Crashes during nighttime hours | 25% |
| Percentage of crashes during nighttime hours for unlighted intersections | 64% | Percentage of crashes during nighttime for lighted intersections | 36% |
|
