A comprehensive study of advanced information feedbacks in real-time intelligent traffic systems

► Puts forward a new strategy as feedback information, called vacancy length feedback strategy. ► Vacancy length feedback strategy greatly improves the road conditions compared to other feedback strategies. ► Vacancy length feedback strategy is the most simple one in application among eight strategies. ► We found that the further the road is away from the entrance, the less influence its condition imposes on the traffic capability. ► In order to improve the traffic capability, what we need to do is to only give feedback on the information of the entrance.