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Jiang J.,Nanjing Southeast University | Lu J.,Nanjing Southeast University | Li Y.,Traffic Management Research Institute of the Ministry of Public Security
Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | Year: 2010

In order to make the setting of road guide signs more effective and scientific, the setting of road guide signs based on the experimental data of driver's recognition was studied in this paper. Driver's recognition parameters of road guide signs under different light conditions were collected by eye tracker and GPS(global positioning system), and a calculation model that defines the main setting parameters of road guide signs based on driver's recognition characteristics is established. The calculation results were compared with the existing norms. The research shows that the fixation duration of drivers to road guide signs increases as the speed of the vehicle and the road name number increase, and the fixation duration of novice drivers is longer than professional drivers. In addition the fixation duration under front light is shorter than that at night. The recognition distance of road guide signs decreases as the speed of the vehicle increases, and the recognition distance under front light is larger than that at night. The main setting parameters that meet the recognition requirements of professional drivers and novice drivers are notably different, and some setting parameters of the existing norms cannot meet the recognition requirements of novice drivers.

Lyu N.,Wuhan University of Technology | Fu Q.,Traffic Management Research Institute of the Ministry of Public Security | Wu C.,Wuhan University of Technology
ICTIS 2015 - 3rd International Conference on Transportation Information and Safety, Proceedings | Year: 2015

To ensure traffic safety of highway off-ramp area, it should leave enough reaction time for drivers taking corresponding actions after traffic signs. And the recognition time for traffic signs depends on information volume. In this study, traffic sign recognition process in highway off-ramp were analyzed and visual recognition time model was set up. Then, the information volume contained in traffic signs was calculated using the information theory, and the information was divided it into four grades. In order to analyze the recognition time for different information grades, a simulation driving experiment was implemented. 20 participants took part in this experiment and the time for four grades was obtained. An evaluation approached was proposed, which identifies the safety conditions of highway off-ramp into four levels according to the time ranges after recognition. The proposed traffic safety evaluation method may provide a new way to evaluate the safety for highway off-ramp for its intuitive, easy operation and reasonable, especially for setting traffic signs information volume. © 2015 IEEE.

Gao Y.,Traffic Management Research Institute of the Ministry of Public Security | Su H.,Southwest Jiaotong University | Jin W.,Southwest Jiaotong University
Xitong Fangzhen Xuebao / Journal of System Simulation | Year: 2014

Design and implementation methods of virtual traffic environments for driving safety education were proposed. Architecture of driving simulator for safety education was introduced. Design method of virtual traffic environments was proposed, Main contents include: design of road networks, design of traffic incidents, design of evaluation rules. Architecture of 3D model of virtual traffic environments, implementation methods of dynamical object and simplification methods of 3D models were discussed. The virtual traffic environment was implemented and was used in driving safety education. Education effects were gathered and analyzed. Analysis shows the virtual traffic environment is effective to help drivers to enhance safety consciousness and improve driving skills.

Ma X.,Wuhan University of Technology | Wu C.,Wuhan University of Technology | Gao Y.,Traffic Management Research Institute of the Ministry of Public Security
Wuhan Ligong Daxue Xuebao (Jiaotong Kexue Yu Gongcheng Ban)/Journal of Wuhan University of Technology (Transportation Science and Engineering) | Year: 2014

As the car quantity increase, parking problems in cities become urgent to be solved. This study focuses on this problem, and introduces the interval uncertainty theory into the planning model and its solution procedure. This interval uncertainty method can deal with the uncertainty factors during data collection and planning procedure. Except for the system cost, environment quality is considered in the object function. At last, Wuhan Square, as a typical big business center, is chosen as a study case. Based on the current data, this study gets the 15-year planning according to the proposed model, and analyzes the trends of environment. This model will be helpful to planning and environment improvement of large and medium-size city.

Sun Z.-L.,Traffic Management Research Institute of the Ministry of Public Security
Jiaotong Yunshu Xitong Gongcheng Yu Xinxi/Journal of Transportation Systems Engineering and Information Technology | Year: 2011

This study proposes the overall technology rotes of networking and monitoring service platform for vehicle security detection line based on WebService technology methods, aiming at resolving some serious problems existing in vehicle security detection line, such as various equipments, data sharing, standard operation, and so on. This study describes the structure design and main function of the service platform, proposes the standardized process control and process monitoring, designs some interface specifications to access of vehicle registration information of local government, and ultimately establishes a national technical standard for this area. The results are expected to conduct local governments to set up the service platform, regulate the application, service for social citizens, and improve the capability of local governments in the supervision of vehicle security detection.

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