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原文传递 PERMIT VEHICLE ROUTING SYSTEM IN HUNGARY: PROTECTING BRIDGES FROM HIGHLY LOADED VEHICLES.

题名：	PERMIT VEHICLE ROUTING SYSTEM IN HUNGARY: PROTECTING BRIDGES FROM HIGHLY LOADED VEHICLES.
作者：	Kolozsi-G; Szilassy-A; Agardy-G; Gaspar-L
关键词：	Bridge-management-systems; Heavy-vehicles; Hungary-; Permits-; Routing-
摘要：	Hungary, together with other Central-European young democracies, has been more and more integrated into the "family" of developed Western European countries. The economic boom and the increasing transport needs cause high loading of roads and bridges. From 1910 on, written Hungarian Bridge Codes have been available which include the design loads. During the past 88 years, the intensity of loads has been increased by three, while the total number of road vehicles has grown from some hundreds to the present 300 vehicles/1000 inhabitants. The continuous development has, of course, needed the repeated updating of these specifications, the 8th version of which is presently valid. There are already special vehicle loads for old bridges which are similar to the realistic loads of the actual road vehicles. The traffic size is monitored continuously by built-in measuring stations (WIM-stations). For the permit vehicle routing system of overloaded vehicles, a computer program used by the central highway administration has been available since 1987. Some 25,000 permits are issued for vehicle routing every year; the ratio of overloaded vehicles is 40%. Special attention is given to the vehicles which have a total weight of 2000-2500 kN. In the computer selection of vehicle routing, the program considers every route between the starting point and the destination and evaluates the possible obstacles (including bridges) of the routes available in the data base from the viewpoint of size and loadability. If the result of built-in routine checking is "sharp," the calculation should be checked by a specific method. The method needs an updated data base which is loaded by the managers of highway bridges and the data are updated every year or after major changes. A computer-assisted routing of hazardous materials developed in Hungary is also outlined.
总页数：	Conference Title: Eighth International Bridge Management Conference. Location: Denver, Colorado. Sponsored by: Transportation Research Board Committee on Bridge Maintenance and Management (A3C06). Held: 19990426-19990428. Transportation Research Circular
报告类型：	科技报告