Understanding the Effect on Driver’s Behavior by Color-coordinated Destination Indicators and Changing Arrangement of Arrows on Traffic Guide Sign

Abstract

Junction of the deep underground expressway which is currently under construction has a specific road structure that sharp curves and split or merge points are concentrated in a short section. It has been proved in a previous study that lack of guide information occurs. In addition, in a previous study, application of color-coordinated destination indicators as a guidance method not solely depending on traffic guide signs has been examined as a possible countermeasure against lack of guide information. Upon analysis of behaviors of vehicles and drivers obtained from indoor driving experiment using the driving simulator, effectiveness of the color-coordinated destination indicators as a countermeasure against the problems have been verified. In this study, color-coordinated destination indicators with traffic guide signs which layout are different from usual pattern has been estimated. And, to make the factor of the effectiveness clear, driver's recognition of visual information and judgement about a direction were analyzed.