Kazuya Sasaki

Analysis of driver’s negotiation patterns at intersection

We conducted an experiment using a car with experimental instruments to investigate drivers behavior when entering a non-signalized intersection without right of way. We compared the negotiation patterns of skilled drivers and unskilled drivers at non-signalized intersections. We found differences in the position where a driver stopped at an intersection and the number of times that a driver looked left and right. We evaluated both drivers negotiation patterns when entering an intersection from the viewpoint of safe driving by simulation. Based on the simulation results, we propose a way to improve the negotiation pattern of a driver without right of way.

What causes dangerous driving behaviors when entering a non-signalized intersection? - extracting inner factors and constructing a driver model -

By conducting a questionnaire survey, from the viewpoint of Human Factors, we examined drivers inner factors which cause dangerous driving behaviors. In the survey, each driver answered a cognitive information processing flowchart of his/her driving behaviors when entering a non-signalized intersection. Concretely, they answered when and where they confirm the existence of crossing cars, how they operate the accelerator, the brake pedal and so on. We extracted 15 inner factors that make deviations from desirable driving behavior and revealed the relationships between these inner factors and eight elements of driving behavior. Finally, we constructed a fundamental driver model including these inner factors.