Reducing travel delay by in-car advice on speed, headway and lane use based on downstream traffic flow conditions - a simulation study

A new advisory ADAS system is implemented in micro simulation to asses the effects on traffic flow as well as on safety. The system uses loop detector data from which situations may be recognized where advices are given to drivers in-car. Advice is given on speed, headway and lane use. Effectively the system allows drivers to respond to downstream traffic flow conditions that they can not yet observe. Additionally the system suggests an action to deal with downstream conditions while sufficient time is available to take action. This research focuses on a lane-drop location where advices are given such that traffic is more evenly spread over the two lanes after the lane-drop. Positive effects can already be found for small penetration rates while a substantial reduction of vehicle loss hours is found for larger penetration rates. The results furthermore indicate that CCC could be beneficial for traffic safety.Transport and PlanningCivil Engineering and Geoscience