Table 2.
Description of variables (N=863).
| Category | Variable | Description | Source |
|---|---|---|---|
|
| |||
| Crash | Pedestrian crash frequency | Number of pedestrian crashes | SDOT |
| Road network | 3-way intersection | Number of 3-way intersections/zonal area (1/ha) | SDOT |
| 4-way intersection | Number of 4-way intersections/zonal area (1/ha) | SDOT | |
| 5-way intersection | Number of more than 5-way intersections/zonal area (1/ha) | SDOT | |
| Sidewalk density | Sum of sidewalk length/zonal area (1km/km2) | SDOT | |
| Street elements | Steep area proportion | Proportion of steep areas (0~ 1) | PSRC |
| Bus stop density | Number of bus stops/zonal area (1/ha) | King County | |
| Stop sign density | Number of stop signs/zonal area (1/ha) | SDOT | |
| Zonal Speed Limit | Zonal-mean posted driving speed limit (mph) | SDOT | |
| Land use | Household density | Number of households/zonal area (1k/ha) | PSRC |
| Employment density | Number of employments/zonal area (1k/ha) | PSRC | |
| Land use mixture | Entropy of five types of land use (0~1) | PSRC | |
| Commercial land use | Proportion of commercial and mixed land use | PSRC | |
| Government & office | Proportion of office and government land use | PSRC | |
| Public parks | Proportion of public parks | SDOT | |
| Industrial land use | Proportion of industrial land use | SDOT | |
| School density | Number of schools/zonal area (1/ha) | SDOT | |
| Activity center density | Number of activity centers/zonal area (1/ha) | SDOT | |
| Traffic demand | Walking mode share | Proportion of pedestrian trips divided by total number of trips (0~ 1) | PSRC |
| Number of trips | Total number of trips (1k) | PSRC | |