Table 1 Traffic indicators examined for GIS-based LUR models.
Indicator type | Indicator | Units |
|---|---|---|
Cumulative density scores: | Unweighted density within: 50, 100, 200, 300, 500 m buffers | Vehicle-meters/per day/m2 |
| Â | Kernel-weighted density: 50, 100, 200, 300, 500 m buffers | Vehicle-meters/per day/m2 |
| Â | Density of urban roads (> 8500 cars/day) within 200 m | Vehicle-meters/per day/m2 |
Summary measures: | Total roadway length within: 50, 100, 200, 300, 500 m | Meters |
| Â | Total ADT*Length (VMT) within 200 m | Vehicle-meters per day |
Distance-based measures: | Distance to nearest urban road (>8500 cars/day) | Meters |
| Â | To nearest major road (>13,000 cars/day) | Meters |
| Â | To nearest highway (>19,000 cars/day) | Meters |
| Â | To nearest MHD-designated truck route | Meters |
Characteristics of nearest major road: | Average daily traffic (ADT) | Vehicles/day |
| Â | ADT/Distance to major road | (Vehicles/day)/m |
| Â | Diesel fraction | Percent (%) |
| Â | Trucks per day | Vehicles/day |
| Â | Trucks/Distance to major road | (Vehicles/day)/m |