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Human Factors: The Journal of the Human Factors and Ergonomics Society
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Optical Information for Car Following: The Driving by Visual Angle (DVA) Model

George J. Andersen

University of California, Riverside, Riverside, California, andersen{at}ucr.edu

Craig W. Sauer

University of California, Riverside, Riverside, California

Objective: The present study developed and tested a model of car following by human drivers. Background: Previous models of car following are based on 3-D parameters such as lead vehicle speed and distance information, which are not directly available to a driver. In the present paper we present the driving by visual angle (DVA) model, which is based on the visual information (visual angle and rate of change of visual angle) available to the driver. Method: Two experiments in a driving simulator examined car-following performance in response to speed variations of a lead vehicle defined by a sum of sine wave oscillations and ramp acceleration functions. In addition, the model was applied to six driving events using real world-driving data. Results: The model provided a good fit to car-following performance in the driving simulation studies as well as in real-world driving performance. A comparison with the advanced interactive microscopic simulator for urban and nonurban networks (AIMSUN) model, which is based on 3-D parameters, suggests that the DVA was more predictive of driver behavior in matching lead vehicle speed and distance headway. Conclusion: Car-following behavior can be modeled using only visual information to the driver and can produce performance more predictive of driver performance than models based on 3-D (speed or distance) information. Application: The DVA model has applications to several traffic safety issues, including automated driving systems and traffic flow models.

Human Factors: The Journal of the Human Factors and Ergonomics Society, Vol. 49, No. 5, 878-896 (2007)
DOI: 10.1518/001872007X230235
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[Abstract] [PDF]