Empirical Analysis of Effect and its Continuousness of Chokers Installed Serially in Residential Road Having the Two-way Traffic

Abstract

The purpose of this study is to examine the effect and its continuousness for the chokers installed serially in residential road having the two-way traffic in Oridukatamachi Inazawa-shi Aichi. Changes in traffic flow were investigated and analyzed before and at two points after improvement of the chokers’ road. As a result, the following findings were obtained. In a road section including the two chokers, both of the average traveling speed of vehicles after improvement have decreased compared to before improvement. A certain level of effect and its continuance on the chokers installed serially are recognized. However, there is a possibility that the effect of speed control decreases slightly with passage of years after improvement. One of the causes is the progress of the concession behavior at the time of passing the chokers in traffic vehicles. In addition, even if a short choker interval is provided, the traveling speed decreases only in a local range. It would be important to take measures in a comprehensive viewpoint based on the road conditions in the longitudinal direction of each choker.