Research Article
Influence of Multiple Freeway Design Features on Freight Traffic Safety
| Parameter | Large truck-involved crashes | Total crashes | Coefficient | SE | -value | Coefficient | SE | -value |
| Constant | −17.7705 | 1.4104 | <0.0001 | −12.5632 | 0.3252 | <0.0001 | Ln(AADT) | 2.0638 | 0.0587 | <0.0001 | 1.3673 | 0.0278 | <0.0001 | Inside rumble strips | −0.3856 | 0.0969 | <0.0001 | −0.2389 | 0.0696 | 0.0006 | Inside shoulder width | −0.0140 | 0.0074 | 0.0572 | N/S | N/S | N/S | Outside rumble strips | −0.2086 | 0.0979 | 0.0332 | −0.1692 | 0.0711 | 0.0669 | Outside shoulder width | −0.0417 | 0.0129 | 0.0013 | N/S | N/S | N/S | Curve | 0.2053 | 0.0479 | <0.0001 | 0.1073 | 0.0344 | 0.0018 | No. of lanes ∗ Ln(AADT) | −0.0106 | 0.0033 | 0.0016 | N/S | N/S | N/S | Lane width ∗ curve | −0.2600 | 0.1089 | 0.0169 | N/S | N/S | N/S | AIC | 11800.52 | 16516.13 |
|
|
N/S: not significant.
|