Research Article
Exploring the Impact of Differentiated Per-Lane Speed Limits on Traffic Safety of Freeways with Considering the Compliance Rate
Table 3
ANOVA results of the traffic safety indexes under different compliance rates of slow vehicles.
| | Source | Lane changing frequency | Coefficient of variation of speed | Incident rate of DS 1 | Incident rate of DS 2 | | Df | F value | Pr(>F) | Df | F value | Pr(>F) | Df | F value | Pr(>F) | Df | F value | Pr(>F) |
| | Vehicle density | 1 | 64.005 | 3.38e-12 | 1 | 7.853 | 0.00559 | 1 | 2.341 | 0.1294 | 1 | 44.41 | 1.86e-09 | | DPLSL scenario | 1 | 147.342 | < 2e-16 | 1 | 0.660 | 0.41770 | 1 | 4.726 | 0.0323 | 1 | 18.33 | 4.51e-05 | | Inner/outer lane | NA | NA | NA | 1 | 143.545 | < 2e-16 | NA | NA | NA | NA | NA | NA | | Compliance rate | 4 | 4.774 | 0.00151 | 4 | 32.043 | < 2e-16 | 4 | 3.308 | 0.0140 | 4 | 25.82 | 2.10e-14 |
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