抄録
VSL(Variable Speed Limit) is one of the improving traffic operation method. Some studies about the effect of VSL have been done in Europe, but it is hard to find the cases and studies in Korea, especially theoretical verification. This study is aimed to evaluate the effectiveness including theoretical verification based on traffic flow model and shock wave theory. The flow-density diagrams from are evaluated against the traffic flow model and shock wave theory. As the result of evaluation, there are effects on slowdown the speed of shockwave and reducing the average delay as compared with that of the non-VSL case. And the effects and the changes of traffic flow in VSL case are verified as q-k curve and shock wave theory. This study will be preliminary research to decide the scope of VSL control and make decisions for control strategies from now on.
