| The quantity of road traffic accidents in china is high and grow rapidly, the average the casualty which causes by the road traffic breaks through 10000 people every year.Mortality rate of road traffic in china is much higher than that in other national, is the first of world in recent years.The situation of road traffic safety is very severe.At present, the problem of road traffic safety has been one of important problems of people life.Firstly, this paper from road traffic safety major effect factor: The person, the vehicle, road these three aspects, analyze them separately to the traffic safety influence.As the basic facilities of road traffic, road play a very important effect on traffic safety system,but the effect of road is often underestimated or neglected at analyzing and evaluating road traffic safety.So the article mainly analyzes road factor,explains in detail the relationship of the road factor and road traffic safety,the road factor influence rate and the specific effect of road factor on road traffic safety, gives prominence to the effect of road factor.Secondly, discusses evaluation of road traffic safety, introduces the concept,principle and common methods of evaluation of road traffic safety, describes in detail the application of the two comprehensive evaluation methods, grey comprehensive evaluation and fuzzy comprehens- ive evaluation on the evaluation of road traffic safety.Thirdly, selects grey cluster evaluation method to evaluate road traffic safety of Nanjing c- ity in 2000-2006 year, analyzes calendar year's traffic safety situation, on basic of mastering it's characteristics to select evaluation indexes, combining with practical characteristics of Nanjing traffic safety to carry on the evaluation.Lastly, according to the present situation of study on road traffic safety, still did not have generally acceptable and widely applicable evaluation model method and system's evaluation system, puts forward a species comprehensive evaluation thought from.First makes the improvement from the assessment method, combining with existing methods characteristics, several kind of appraisal methods are synthesized to one kind of more superior more suitable appraisal method and takes the concrete assessment methods as the example to carry on the synthesis.Next, carries on the synthesis to the measure results, uses several different assessment methods simultaneously to carry on the evaluation separately, after each assessment method obtains the measure result, carries on the synthesis to the results to obtain comprehensive objective measure results finally and to carry on the example calculation.
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