There are considerable differences between the use of individual and public transport with regard to traffic safety. Until now it has hardly been possible to compare these differences directly with identical relations, due to the fact that especially the routes which are taken by public means of transport mainly consists of several stages for which various means of transport are used (on foot, by bicycle, by car). Therefore, the traffic safety of such a route will be combined with the different traffic safety of each stage, in which different means of transport are used. A stage model has been developed in one first working step to achieve numerical results allowing to describe all the routes on which at least at one stage a public transport is used. The results are subdivided into individual stages of the complete route. The application of the stage model and the safety analysis are carried out as follows: (1) From a random sample collection for the whole of the Federal Republic of Germany being an additional collection to KONTIV 82, the route collectives in individual and public transport and their single stages are evaluated in their longitudinal and numerical characteristics respectively. The route collectives differentiate between urban and rural routes and especially commuter traffic. (2) In four sample cases, two urban and two rural regions, questionnaires containing questions about type and length of routes as well as route stages are handed out to public transport passengers. This information is evaluated as for point 1 above. A safety analysis is carried out from these given sets of data with the help of specific accident rates with regard to the KONTIV data set, and with the help of an evaluation of the accident records including all accidents involving public transport in the four above mentioned regions.
Abstract