Road Safety Benefit Evaluation For Intelligent Traffic Management Systems Of Beijing City

In recent years, with the development of economy and the rapid growth of car ownership, road traffic problems have become increasingly serious.In order to ease the traffic pressure and improve road safety,ITMS have been installed in Beijing in 2008.Benefit evaluation is important because the investors want to know how much money it brings.And road safety benefit evaluation is one of the most important part in the benefit evaluation for ITMS.Based on this,the propose of the paper is the road safety benefit evaluation for ITMS in Beijing.The main points of the paper is following.1. The paper presents an evaluation index of safety benefit for Intelligent Traffic Management Systems.The index contain traffic accident index and non-traffic accident index,which contain 14 indicators.And the computation of all indicators are given.2. The paper proposes an effective evaluation method of road safety benefit for Intelligent Traffic Management Systems--the benefit-to-loss ratio method. Because ITMS can be treated as traffic safety measures, the method to evaluate traffic safety measures,which is odds ratio,can also be used to evaluate ITMS.The paper also choose places and time to compare,like them in the method of odds radio,though which the method can eliminate the interference factors.3. The paper evaluates the road safety benefit for ITMS in several areas of Beijing city using the traffic accident data in these areas by the benefit-cost ratio method.Though the results in these areas,some conclusion in the road safety benefit for ITMS has been given.