Fig 1.
Flowchart of the proposed approach for traffic crash prediction.
Fig 2.
Graphical illustration of the proposed SSM-SVR approach for traffic crash prediction.
Table 1.
Summary statistics of analyzed continuous variables.
Table 2.
Summary statistics of analyzed categorical variables.
Fig 3.
Searching process and results based on the 4-fold cross validation: (a) first search; (b) contour plot corresponding to first search; (c) second search; (d) contour plot corresponding to second search.
Table 3.
Comparison between the observation in 2014 and the inputs for the developed models.
Table 4.
Results of traffic crash prediction.
Fig 4.
Comparison of model performances. (a) Predicted value of proposed SSM-SVR model vs. observed value. (b) Predicted value of SVR model vs. observed value. (c) Predicted value of MVNB model vs. observed value.