Dounan Tang

University of California, Berkeley | UCB · Department of Civil and Environmental Engineering

Recent advances in bottleneck studies have highlighted that different architectural adjustments at the exit may reduce the probability of clogging at the exit thereby enhancing the outflow of the individuals. However, those studies are mostly limited to the controlled experiments with non-human organisms or predictions from simulation models. Compl...

Smart card fare collection systems produce large quantities of spatial-temporal data on transit trips. These data contain rich semantics about the transit riders’ travel behavior: the hidden mobility patterns that motivate the movement of passengers between stations. We utilize the Latent Dirichlet Allocation (LDA) to decompose the smart card data...

Transit signal priority has a positive effect on improving traffic congestion and reducing transit delay and also has an influence on traffic emission. In this paper, an optimal transit signal priority scheme based on an improved algebraic method was developed and its impact on vehicle emission was evaluated as well. The improved algebraic method w...

The technique to forecast available parking spaces (APSs) is the foundation theory of parking guidance information systems (PGISs). This study utilises data collected on parking availability at several off-street parking garages in Newcastle upon Tyne, England, to investigate the changing characteristics of APS. Using these baseline data the resear...

Variable message signs (VMS) along with the released guiding information are indispensable components of parking guidance system (PGS). The location of VMS significantly influences the operation effect of PGS. The techniques to evaluate the effectiveness of variable message signs location scheme are discussed in this paper. On the basis of the exis...

Parking guidance and information (PGI) systems are thought to enable a more efficient control and management of the traffic and the use of the available car park in urban areas. Despite the installation of PGI systems in many cities and their operation for a number of years, the levels of usage of PGI remain much lower than expected. To guide inves...

With the provision of any source of real-time information, the timeliness and accuracy of the data provided are paramount to the effectiveness and success of the system and its acceptance by the users. In order to improve the accuracy and reliability of parking guidance systems (PGSs), the technique of outlier mining has been introduced for detecti...