Research Article
Influence of Multiple Freeway Design Features on Freight Traffic Safety
Table 6
Safety effects estimation functions for total crashes.
| Freeway design elements | NB | MARS | Functions | Interaction term | Functions | Interaction term |
| Inside rumble strips (IRS) | | N/A | } | IRS AADT, IRS ISW | Outside rumble strips (ORS) | | N/A | | N/A | Inside shoulder width (ISW) | N/A | N/A | | ISW AADT, ISW IRS, ISW Curve |
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N/A: not available.
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