If something happens, they start slowing down whether slowly or quickly depending on the incident ahead of them. Mapping this traffic behaviour to Fig. 7(a), the contrast discussed in the previous paragraph can be examined. The section of Cluster 1 with free flow speed results in zero or ...
Traffic incident modelling in mixed urban networksH. MongeotH. Mongeot. Traffic incident modelling in mixed urban networks. PhD thesis, Faculty of Engineering and applied science, Southampton, 1998.