A Study of Combined Road Type and Collision Diagram to Improve on Hazardous Intersections

• Main Authors: Che -Wei Chuang, 莊哲維
• Other Authors: Tien-Pen Hsu
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/18696295084905124423

碩士 === 國立臺灣大學 === 土木工程學研究所 === 102 === Most studies of hazard intersection improvements use statistics and analyze features of hazard intersection, then give rough suggestions, such as add warning signs, paint guiding markings, or implementation strict traffic law enforcement. But they don’t discuss or study from practical road types. Currently, the main improved measures emphasis on the use of signs and markings such as warning and guidance devices, or adjust seconds of signals. For the whole intersection design, sight distance, driving route, it failed to effectively integrate into the improvement measures, so let improved efficiency discounted. Thence, this research is based on the characteristics of different type of road intersection to combine collision diagrams corresponding to similar intersection for improvement strategies. The research selects 20 accident-prone intersections to plan improved measures for each corresponding intersections type in Kaohsiung City. Currently, for improvement measures of the accident prone intersection, not yet have a more complete procedure. The research references collision diagrams to combine with different type of intersection to design. By road type classifications and improved phase, to execute design of road space and clear obstacles of sight distance, the research tries to establish improvements of the correspondence the causes of the major intersection. It is expected to reduce about 60% accidents, caused by the improper road geometric design, signals design, and signs and markings problems. We can found that there are different improvement ways for different road type, and the main design principle is that keeps close to orthogonal intersection, provide sufficient all red and yellow time (clearance time), provide good signs and markings guide, and so on. To ensure that the process of driving through the intersection to have good vision, sufficient green time, and appropriate stop space and through space, etc. In accordance with the principles of design will be able to effectively improve the accident problem in hazard intersection.