This paper focuses on developing an analysis framework to study the impact of cell phone treatment (cell phone type and call status) on driver behavior in the presence of a dilemma zone. Specifically, we examine how the treatment influences the driver manoeuvre decision at the intersection (stop or cross) and the eventual success of the manoeuvre. For a stop manoeuvre, success is defined as stopping before the stop line. Similarly, for a cross manoeuvre, success is defined as clearing the intersection safely before the light turns red. The eventual success or failure of the driver’s decision process is dependent on the factors that affected the manoeuvre decision. Hence it is important to recognize the interconnectedness of the stop or cross decision with its eventual success (or failure). Towards this end, we formulate and estimate a joint framework to analyze the stop/cross decision with its eventual success (or failure) simultaneously. The study is conducted based on driving simulator data provided online for the 2014 Transportation Research Board Data Contest at http://depts.washington.edu/hfsm/upload.php.
The model is estimated to analyze drivers’ behaviour at the onset of yellow by employing exogenous variables from three broad categories: driver characteristics, cell phone attributes and driving attributes. We also generate probability surfaces to identify dilemma zone distribution associated with different cell phone treatment types. The plots clearly illustrate the impact of various cellphone treatments on driver dilemma zone behavior.
Working paper. Final version published in Accident Analysis & Prevention, dec 2015
- Naveen Eluru and Shamsunnahar Yasmin