抄録
In the past, traffic engineering designs are mostly based on car traffic volume, delay, and travel time and efficiency oriented. However, the traffic composition and traffic volume of motorcycle are very high in Taiwan and in some Asia countries as well. The traffic engineering design must take motorcycles into consideration. Besides, proportion of motorcycle in the accident casualty is also very high, and furthermore, the number of motorcycle causality is increasing in recent year. In the past, the segregated flow concept to substitute for mixed traffic has been implemented and has caused the decrease of the death accident. However, the injured accidents is still increasing continuously. Therefore, the study aims at analyzing the accident data using collision diagram and an accident diagnosis process to find out the traffic engineering design problem and to propose the new design method for reducing motorcycle involved accidents.
