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Table 2 Example of Calibration Factors (Italian two-lane rural road segments [48])
From: Integrated American-European protocol for safety interventions on existing two-lane rural roads
Variable | Calibration Factor Cx | No. of Segments | Coefficient of variation cv[Cx] |
|---|---|---|---|
Overall | 1.44 | 398 | 0.07 |
AADT <10,000 | 1.19 | 316 | 0.09 |
AADT = 10,000 ÷ 17,800 | 1.75 | 82 | 0.10 |
North Italy | 1.66 | 112 | 0.19 |
Central-Southern Italy | 1.29 | 286 | 0.08 |
Flat Terrain | 1.49 | 161 | 0.08 |
Rolling Terrain | 1.38 | 237 | 0.11 |