Modelling Adolescent Pedestrian Crossing Decision at Unmarked Roadway

Modelling Adolescent Pedestrian Crossing Decision at Unmarked Roadway

Peng Chen Jingmin Xie Jingliu Yu

School of Transportation, Wuhan University of Technology, China

Page: 
305-315
|
DOI: 
https://doi.org/10.2495/SAFE-V9-N4-305-315
Received: 
N/A
|
Accepted: 
N/A
|
Published: 
30 November 2019
| Citation

OPEN ACCESS

Abstract: 

To address adolescent pedestrian safety problems at unmarked roadway, there is a need to under- stand adolescent pedestrian crossing decision behavior at unmarked roadway. cloud model, which is an uncertainty conversion model between qualitative knowledge description and quantitative value expression, was used to deal with adolescent pedestrian’s cognitive uncertainty in the crossing decision- making process. Then the decision table for adolescent pedestrian crossing at unmarked roadway was established. Attribute reduction based on discernibility matrix and value reduction based on induc- tion in the rough set theory were applied to reduce the decision table and extract the decision rules of adolescent pedestrian crossing at unmarked roadway. After the reduction, the conditional attributes were the vehicle speed and the distance between pedestrian and vehicle. Nine crossing decision rules were obtained, including five certainty rules. Finally, the proposed method was compared with the existing method. The results show that the prediction accuracy and area under the receiver operating characteristic (rOc) curve for the proposed method are 91.4% and 0.941 respectively, so it is superior to the logistic regression model, and the simple and intuitive pedestrian crossing decision rules can be obtained, which can lay the foundation for traffic safety simulation.

Keywords: 

adolescent pedestrian, cloud model, crossing decision, gap acceptance, rough set, unmarked roadway.

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