Analysis of vehicle horn use and factors at intersections in an urban area of Taiwan
* Presenting author
In the urban areas of many countries, noise pollution is generated by frequent use of car and motorbike horns. The final goal of the present study is to clarify the causes of horn use and to propose a transportation system to suppress horn use. To this end, we have been investigating relationships between horn use and factors such as driver awareness and behavior and vehicular environment. Our previous study investigated causal relationships between horn use and the vehicular environment in Taiwan and found that horn use was frequent when gridlock formed at intersections. The present study analyzed details of gridlock situations during which vehicle horns were used at three intersections. We found many cases where honking began after vehicles entered the intersection to turn left during the green-light phase. In particular, drivers often used their horns when they had to wait for more than 4 s for the vehicles in front of them to start moving at the beginning of the green-light phase for turning left. Logistic regression analysis revealed that the duration between the signal turning green and the vehicle in front of them starting to move significantly affected the probability that a driver would use a vehicle horn.