|
| Role | Variables | Types | Description |
|
| Dependent variable | Num_crsh | Continuous | Number of crashes (crash frequencies) |
|
| | ADT_1000 | Continuous | Average thousand daily traffic (thousand vehicles per day) |
| | Length | Continuous | The length of a segment (mile) |
| | FFS | Continuous | Free flow speed in road segment (mph) |
| Independent variable | Daily_VMT | Continuous | Average daily Vehicle Mile Traveled (VMT) |
| | RorU | Discrete | Rural or urban: 0 = urban; 1 = rural |
| | FC | Discrete | Segment functional classification: 0 = interstate; 1 = expressway; 2 = arterial; 3 = M_Arterial |
| | Numberofla | Discrete | Number of lanes: 0 = 2 lanes; 1 = 4 lanes |
|