Variable | EN-EX Upstream | EX-EN | EN-EX Downstream | |||||||||
Coefficient | Std. Error | t-statistic | p-value | Coefficient | Std. Error | t-statistic | p-value | Coefficient | Std. Error | t-statistic | p-value | |
Constant | 3.126 | 0.540 | 5.79 | 0.00 | 1.607 | 0.321 | 5.01 | 0.00 | 2.043 | 0.548 | 3.73 | 0.00 |
CRASHRATE (EN-EX) | - | - | - | - | −0.146 | 0.085 | −1.71 | 0.087 | - | - | - | - |
TLANES |
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SHOULDER | −0.128 | 0.033 | 0.03 | 0.00 | −0.062 | 0.015 | −4.19 | 0.00 | −0.049 | 0.028 | −1.73 | 0.084 |
MEDIAN | −0.076 | 0.016 | −4.87 | 0.00 | −0.040 | 0.011 | −3.61 | 0.00 | −0.060 | 0.019 | −3.25 | 0.001 |
AADT |
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| 0.000002 | 0.0000007 | 3.03 | 0.002 |
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GRADE |
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| 0.127 | 0.0723 | 1.75 | 0.080 |
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RADIUS |
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| −0.00006 | 0.000019 | −3.20 | 0.001 |
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LENGTH | −0.00008 | 0.00003 | −2.75 | 0.006 |
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RMSE | 0.368 |
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| 0.239 |
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| 0.395 |
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McElro’s R2 | 0.545 |
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