Motorway control systems at highly-stressed motorways in a metropolitan area.

The basic structure of the Hamburg motorway network is the motorway A1 and A7. The two motorways belong to the most important ones in Germany. In the following the report focuses and concentrates on the motorway A1. The traffic situation was described by the traffic flow. The traffic flow was evaluated by the average daily traffic (ADT) not only in 1999 but also in 2010. The accident situation was analysed more detailed in two steps. In the first step the accident rate for fatalities and casualties (AFC) separated into sections and differentiated between the driving directions northbound and southbound was analysed. In the second step the accident analysis was focused only on the Hamburg area to get detailed information for every locality. On the basis of the carried out investigations critical sections were localised. In January of 2001 the motorway control system in the running of the A7 was taken in operation. The essential new ITS measures are n motorway control system for the motorways A1 and A24. The implementation will be carried out in two steps. In addition a controlling of the interchanges will be implemented. The implementation of ramp metering is under increasing discussion so appropriate access points for the implementation of ramp metering were proposed. A further ITS measure will be implemented by a network control to have alternative routes in the northern part of Germany. The metropolitan area of Hamburg will mark the southern part of a network loop. The measures were verified by the benefit and cost. The benefit was defined by the alteration of the accident costs and the alteration of time costs. The cost rates were assumed on the basis of a German guideline. Most of the ITS-projects became part of the announcement for Federal Telematic Program. This project is embedded in the VIKING program of the European community. VIKING is a co-operation between the states of the northern part of Europe. The implementation will be supported by VIKING, too. (A) For the covering abstract of the conference see ITRD no 207828. The reprints are also available at the web - http://www.vti.se/pdf/reports/K18APart1.pdf; http://www.vti.se/pdf/reports/K18APart2.pdf and http://www.vti.se/pdf/reports/K18APart3.pdf.