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一、引言我国公路里程每年都在迅速增长。一方面公众对公路配套的交通信息服务需求显著提高,另一方面公路管理部门的管理技术水平又远远落后于公路硬件的建设。落后的、零散的高速公路管理方式已经无法适应这一状况的发展,问题主要体现在以下几个方面:1机动车保有量增长的速度远远大于公路建设速度。同时,一方面新建改建公路里程快速增长,一方面原有道路因资金不足、交通量过重等原因大范围损坏,造成公路资源相对不足。周边环境的变化迅速,
I. Introduction China’s highway mileage is growing rapidly every year. On the one hand, the demand for traffic information services supporting the highway is significantly raised. On the other hand, the management level of highway administration lags far behind the construction of highway hardware. Backward and fragmented highway management has been unable to adapt to the development of this situation, the problem is mainly reflected in the following aspects: 1 motor vehicle ownership growth rate is far greater than the speed of highway construction. At the same time, on the one hand, the mileage of newly-built highways has increased rapidly. On the one hand, the existing roads have been damaged in a large scale due to insufficient funds and heavy traffic, resulting in relatively inadequate road resources. The surrounding environment changes rapidly,