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In view of the major cause for traffic congestion on urban expressways and based on the in-depth analysis and comparison of plenty of related research at home and abroad, the analysis on on-ramp metering and metering threshold calibration in the study area was conducted to establish a traffic flow and traffic signal control model with the road network area from Jinma Overpass to Dashuying Overpass...
This paper presents a method called Event-based Incremental Update of Spatial-Temporal Database. By studying the event-based incremental update of spatial-temporal database, proposed event-based incremental information model, including incremental information modeling and the description method of incremental information based on XML, established the overall framework of the incremental update, including:...
The road network emergency evacuation means evacuating the traffic flow which is trapped to safer areas as immediately as possible, in order to bring the least impact and destruction by emergent catastrophe events. As the critical issue in emergency evacuation, aiming at the shortest evacuation time, we build a route selection model in emergency evacuation based on quasi-user optimum dynamic traffic...
The problem of designing queue length forecast strategies for bottle-neck junction is considered. The saturation flow and predicted flow achieved through urban road network model and traffic flow prediction model respectively are used as input variables to the queue prediction model based on the Store-and-forward methods to compute the queue length occurring during the green time for phase. Then,...
This paper proposes a method for application in dynamic route guidance using travel time reliability. The definition and calculation method of Travel time reliability of road section, road path and road network is given in this paper, and three road impedance functions are design for different layer. Based on the road impedance functions and road network model, the reliable dynamic route guidance...
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