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Predictor | Estimate | Std. Error | z- value | p-value |
---|---|---|---|---|
All intersections | ||||
(Intercept) | 0.930 | 1.524 | 0.610 | 0.542 |
Ln (Total AADT) | 0.285 | 0.106 | 2.675 | 0.007 |
Main AADT/Total AADT | −6.870 | 2.021 | −3.399 | 0.001 |
Type: Four-legged (reference: Three-legged) | 0.443 | 0.105 | 4.210 | < 0.001 |
Critical sight distance | 0.005 | 0.002 | 2.762 | 0.006 |
Specialized turning lane (Yes – ref.: no) | 0.496 | 0.114 | 4.362 | < 0.001 |
Poor maintenance of pavements (Yes - ref.: No) | −0.397 | 0.115 | −3.444 | < 0.001 |
Cycle path crossing (Yes – ref.: No) | 0.327 | 0.122 | 2.677 | 0.007 |
Goodness-of-fit measures | ||||
LRT (reference: null model) = 5.63 (df = 12), p = .934; LRT (reference: full model) = 161.11 (df = 12), p < .001 | ||||
Nagelkerke R2 = 0.283, AIC = 1877.6 | ||||
Over-dispersion parameter (theta) = 2.84 (std. error: 0.52) | ||||
Interval of continuous predictors | ||||
Total AADT: 4175–41,560 vehicles/day, Main/Total AADT: 0.50–0.62, Critical sight distance: 0.0–139.5 m | ||||
Three-legged intersections | ||||
(Intercept) | 4.696 | 2.895 | 1.609 | 0.108 |
Ln (Total AADT) | 0.366 | 0.220 | 1.661 | 0.097 |
Main AADT/Total AADT | −16.376 | 3.711 | −4.413 | < 0.001 |
Number of entering lanes on the main road | −0.211 | 0.119 | −1.768 | 0.077 |
Critical sight distance | 0.006 | 0.003 | 2.009 | < 0.001 |
Specialized turning lane (Yes – ref.: no) | 0.927 | 0.228 | 4.061 | < 0.001 |
Traffic control 1: give-way/stop (ref.: no control)a | 0.359 | 0.214 | 1.675 | 0.094 |
Traffic control 2: traffic lights (ref.: no control)a | 0.377 | 0.289 | 1.306 | 0.192 |
Traffic control 3: main + turning lights (ref.: no control)a | 0.556 | 0.313 | 1.777 | 0.076 |
Cycle path crossing (Yes – ref.: No) | 0.900 | 0.235 | 3.830 | < 0.001 |
Goodness-of-fit measures | ||||
LRT (reference: null model) = 63.39 (df = 9), p < .001; LRT (reference: full model) = 5.79 (df = 9), p = .761 | ||||
Nagelkerke R2 = 0.292, AIC = 610.4 | ||||
Over-dispersion parameter (theta) = 5.26 (std. error: 2.75) | ||||
Interval of continuous predictors | ||||
Total AADT: 5420–32,300 vehicles/day, Main /Total AADT: 0.50–0.62, Critical sight distance: 0.0–139.5 m, Number of entering lanes on the main road: 0–4 | ||||
Four-legged intersections | ||||
(Intercept) | −0.127 | 1.623 | −0.078 | 0.938 |
Ln (Total AADT) | 0.372 | 0.108 | 3.450 | 0.006 |
Main AADT/Total AADT | −5.427 | 2.624 | −2.068 | 0.039 |
Critical sight distance | 0.004 | 0.002 | 2.102 | 0.036 |
Specialized turning lane (Yes – ref.: no) | 0.410 | 0.134 | 3.060 | 0.002 |
Poor maintenance of pavements (Yes - ref.: No) | −0.446 | 0.151 | −2.961 | 0.003 |
LRT (reference: null model) = 77.98 (df = 5), p < .001; LRT (reference: full model) = 7.55 (df = 12), p = .819 | ||||
Nagelkerke R2 = 0.225, AIC = 1263.6 | ||||
Over-dispersion parameter (theta) = 2.79 (std. error: 0.59) | ||||
Interval of continuous predictors | ||||
Total AADT: 4175–41,560 vehicles/day, Main /Total AADT: 0.50–0.61, Critical sight distance: 1.6–100.0 m | ||||
All intersections (alternative) | ||||
(Intercept) | 1.713 | 1.513 | 1.132 | 0.257 |
Ln (Total AADT) | 0.371 | 0.103 | 3.613 | < 0.001 |
Main AADT/Total AADT | −9.502 | 2.161 | −4.397 | < 0.001 |
Median on the main road (Yes – reference: No) | 0.226 | 0.117 | 1.930 | 0.054 |
Critical sight distance | 0.004 | 0.002 | 2.359 | 0.018 |
Type of intersection (Signalized – ref.: Unsignalized) | 0.268 | 0.104 | 2.580 | 0.010 |
Poor maintenance of pavements (Yes - ref.: No) | −0.321 | 0.118 | −2.730 | 0.006 |
Cycle path crossing (Yes - ref.: No) | 0.253 | 0.123 | 2.058 | 0.040 |
Goodness-of-fit measures | ||||
LRT (reference: null model) = 124.59 (df = 7), p < .001; LRT (reference: full model) = 8.29 (df = 8), p = .406 | ||||
Nagelkerke R2 = 0.222, AIC = 1914.1 | ||||
Over-dispersion parameter (theta) = 2.40 (std. error: 0.41) | ||||
Interval of continuous predictors | ||||
Total AADT: 4175–41,560 vehicles/day, Main/Total AADT: 0.50–0.62, Critical sight distance: 0.0–139.5 m | ||||
Signalized intersections | ||||
(Intercept) | 2.390 | 2.293 | 1.043 | 0.297 |
Ln (Total AADT) | 0.407 | 0.142 | 2.863 | 0.004 |
Main AADT/Total AADT | −11.302 | 3.586 | −3.152 | 0.002 |
Type: Four-legged (reference: Three-legged) | 0.452 | 0.182 | 2.479 | 0.013 |
Critical sight distance | 0.004 | 0.002 | 1.986 | 0.047 |
Specialized turning lane (Yes – ref.: no) | 0.307 | 0.148 | 2.076 | 0.038 |
Poor maintenance of pavements (Yes - ref.: No) | −0.630 | 0.148 | −4.243 | < 0.001 |
Presence of bus stops (Yes – ref.: No) | −0.914 | 0.357 | −2.559 | 0.010 |
Goodness-of-fit measures | ||||
LRT (reference: null model) = 95.60 (df = 7), p < 0.001; LRT (reference: full model) = 4.39 (df = 9), p = 0.884 | ||||
Nagelkerke R2 = 0.320, AIC = 1078.2 | ||||
Over-dispersion parameter (theta) = 3.08 (std. error: 0.71) | ||||
Interval of continuous predictors | ||||
Total AADT: 5800–41,560 vehicles/day, Main/Total AADT: 0.50–0.61, Critical sight distance: 1.6–139.5 m | ||||
Unsignalized intersections | ||||
(Intercept) | −2.604 | 2.185 | −1.192 | 0.233 |
Ln (Total AADT) | 0.759 | 0.163 | 6.343 | < 0.001 |
Main AADT/Total AADT | −7.868 | 0.173 | 4.389 | 0.001 |
Type: Four-legged (reference: Three-legged) | 1.036 | 2.406 | −3.270 | < 0.001 |
Median on the main road (Yes – reference: No) | −0.998 | 0.329 | −3.031 | 0.002 |
Specialized turning lane (Yes – ref.: No) | 0.516 | 0.204 | 2.523 | 0.012 |
Cycle path crossing (Yes - ref.: No) | 0.997 | 0.193 | 5.156 | < 0.001 |
Presence of sidewalks (Yes - ref.: No) | −1.008 | 0.331 | −3.042 | 0.002 |
LRT (reference: null model) = 65.07 (df = 7), p < .001; LRT (reference: full model) = 11.96 (df = 11), p = .367 | ||||
Nagelkerke R2 = 0.238, AIC = 769.8 | ||||
Over-dispersion parameter (theta) = 8.11 (std. error: 6.14) | ||||
Interval of continuous predictors | ||||
Total AADT: 4175–31,500 vehicles/day, Main/Total AADT: 0.50–0.62, Critical sight distance: 0.0–100.0 m |