Analysis of the traffic injury severity on two-lane, two-way rural roads based on classification tree models

A classification tree approach to identify key factors of transit service quality

“…This is achieved by using the importance index (Kashani and Mohaymany, 2011), of which a standardized form has been used in this paper to reflect the importance of each independent variable on the model. Table 5 shows the standardized importance of the attributes deduced from each of the two models (Pre-- and Post--Evaluation CARTs), and the importance stated by passengers in the CSS.…”

Influencing Factors on Vehicle-Pedestrian Crash Severity of School-Aged Pedestrians

“…The DT approach is a simple and powerful method to solve classification problems and provides a graphical structure using a tree with many branches and leaves. These graphical features are useful in understanding and interpreting the results [20]. In DT models, the root node on top of tree which contains all objects is split into two homogeneous sets that are called child nodes.…”

Freeway Incident Frequency Analysis Based on CART Method

“…In traffic safety field, a few studies have analyzed the accident frequency and damage severity based on the tree model, e.g. Kuhnert et al [12] [14] developed CART method to establish the relationship between accident severity and driver/vehicle characteristics, highway/environmental variables and accident variables, and proved that CART method can be used for dealing with prediction and classification problems of accident frequency and severity, and Kashani and Mohaymany [15] verified this by analyzing the traffic injury severity on two-lane two-way rural roads. Moreover, the study by Pakgohar et al [16] investigated human factors affecting prediction and classification of accident severity in Iran.…”