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Intelligent Transportation: IT technology to improve the urban traffic "mixed flow"

    Transport system as part of the city emergency command, emergency response management platform in the city played a significant role.

    IEEE Society (Electrical and Electronics Engineers) former Chairman,booster cables IEEE Intelligent Transportation Systems Proceedings of the publication edited by Professor Wang Feiyue, told reporters that the transport sector in the city emergency management platform in the position and role is extremely important.battery clip He said that many traffic accidents and even disaster sites, traffic accidents and disasters in many ways and means of implementation, the traffic is from the scene with the arrival of major accidents and disasters ways and means. Any emergency response, in particular,tow rope city emergency management platform, without the effective support of the transport sector, can only be empty words.

    Effective coordination.

    In general, in all the city's traffic command center will be set up emergency control room,ratchet tie dowm the establishment of large-screen video wall and image control equipment, will be distributed in different parts of the existing public security video surveillance signals to bring together, in order to the city's main transport corridors important objective and all-weather monitoring stations and other locations. Safety monitoring system in the control room to establish the community emergency response system equipment operation command center, directing the operation status of the hall, the police monitor the situation so.

    Vehicle global positioning system, will use wireless communications platforms (GSM public mobile communication network, the cluster communication network), satellite positioning technology (GPS), computer technology and electronic maps (GIS) technology, a variety of moving targets (ships, vehicles, etc. ) for status monitoring, scheduling, anti-theft alarm, information query.

    Traffic congestion, road congestion and traffic accidents are becoming more frequent occurrence of serious problems with the world's major cities, a city traffic emergency management can best embody the traffic management level. Unexpected event occurs in traffic, you need to master the first time the event situation and site conditions, activate contingency plans, scheduling needed repair and rescue personnel, vehicles and materials emergencies in the shortest time to complete the disposal. Meanwhile, in a timely manner to the public event information, streaming occurred outside emergency vehicles and pedestrians, unexpected events will be the impact on traffic control at a minimum.

    Therefore, the emergency management needs of urban traffic information collected from published and effective emergency dispatch and processing of all linkage, any link problems are likely to affect the final efficiency.

    So that information to play a "soft" effect.

    Emergency response management in the city, the United States and other developed countries, an early start, there are many places worth learning. Fei-Yue Wang describes the structure of the U.S. emergency response system, the U.S. distribution of emergency management in the federal government, state and county on several levels. Federal Emergency Management Agency FEMA (FederalEmergencyManagementAgency) was originally an independent government agency, "9.11" incident, along with more than 40 other emergency security agencies, into the newly established Department of Homeland Security, perhaps it would be the United States across the country the first "emergency response management" it.

    City emergency response and management of the United States is closely related to FEMA's National Incident Management System NIMS (NationalIncidentManagementSystem) and the National Response Framework NRF (NationalResponseFramework). NIMS's main role is to all levels of government and non-government agencies, public and private organizations and enterprises to provide examples of national emergency line, so that we can in a variety of accidents and disasters in the organic seamlessly together to prevent, protect , response, recovery, etc.; the NRF can be extended by the function, adaptive, flexible structure to the coordination of emergency approved by the national agencies and organizations at all levels and roles, roles and responsibilities so that they join into a whole, and thus play a guiding national down how to deal with all kinds of accidents and catastrophes, such as from the local to the global large-scale terrorist attacks or natural disasters.

    The close relationship between NIMS and the NRF, the daily operation and continuous improvement by the National Integration Center NIC (TheNationalIntegrationCenter) under the Department of Emergency Management systems integration IMSI (IncidentManagementSystemsIntegrationDivision) support. Must be noted that, NIMS is not an ordinary sense of "hard" system, but "soft" system because it can not be used to implement emergency measures, this function is incident command center ICS (IncidentCommandSystem), except in addition to ICS multiple agency coordination system MACS (MultiagencyCoordinationSystem) and public information center, and so institutions, their organization and operation by the NIMS standardized and can be completed by the private sector or non-governmental organizations.

    Among them, the information is released promptly and effectively control and emergency management should be a bright spot in the U.S., especially with the combination of intelligent transportation facilities. ITS abroad for many years proved that information to play its "soft" role in the control of traffic and sometimes even more than the "hard" role. Especially in the case of traffic jam or accident disaster case, the "soft" control can not only effectively prevent the further deterioration of traffic and speed up to clear the speed, but also played a reduced traffic congestion induced diseases (such as depression and heart disease, etc.) level. U.S. National Emergency Alert System (EAS), and the use of EAS created other specialized emergency systems, such as finding missing children for the establishment of AmberAlert systems, etc., are in a variety of emergency management have played an important role. Early last year, U.S. Transportation Security Administration (TSA) also opened a blog and forums to gather information for themselves and provide a channel for public comment.

    IT technology to improve the "mixed flow."

    As a result of the short time, China's smart traffic in the systematic, standard planning, scientific management, basic theory, application and so the depth is still a wide gap with the developed countries. Many practical uses of intelligent transportation system is basically hardware and software products abroad, but has been greatly improved in recent years.

    Fei-Yue Wang said that China R & D and foreign intelligent transportation is the difference between a major urban road traffic in the domestic motor vehicle, bicycle and pedestrian "hybrid" cause. There are that many basic design of the facility did not conduct full consideration the needs of people and vehicles, such as some cities in the simple "giant" type of intersection design, often resulting in a "green light is not green, and red is not red" situation; Some turn out high-speed channel mouth is too short, would not achieve the role of the transition and buffer, it is likely to cause traffic flow "back overflow" phenomenon, that "under the plug on the block", not only high-speed access is not up soon, even the ordinary roads but also to block them. There are cultural traffic, pedestrian culture, citizen awareness of traffic laws, and so on, so many foreign effective intelligent transportation methods to China but ineffective, and sometimes even counter-productive.

    Therefore, the specific circumstances must be formed in accordance with domestic unique theory of intelligent transportation and the development of appropriate intelligent transportation systems. In recent years, Beijing and other urban traffic road "mixed flow" situation improved.

    In addition, variable message traffic card (VMS) in Beijing and Shanghai and other cities should be very successful in using the ITS application, not only played a balanced traffic load and other "soft control" role, but also reduce the induced disease to appease drivers opportunities for emotional can not be ignored "associate" role. Although the accuracy and response time a lot of room for improvement there, but stick to it, and constantly improve, will play a more effective role.

    Intelligent Transportation Foreign different.

    Wang Feiyue that, in essence, China and abroad there is no difference between intelligent transportation, are the use of new information, automation, and intelligent technology to improve traditional and new transportation system safety, efficiency and comfort levels and ensure that the traffic system itself and the appropriate ecological and social environment of sustainable development.

    But Chinese and foreign R & D and application of intelligent transportation there are many different indeed. First, different stages of development, foreign in the seventies of last century began the computer system and automatic control methods for traffic management. Fei-Yue Wang added, "my mentor, the late Professor Saridis and his team of Purdue University in the United States is that time began to hierarchical intelligent control method for the area of urban road traffic signal control."

    Twentieth century, the eighties, foreign IVHS (intelligent vehicle and highway systems) concept of the rise of the nineties, IVHS is ITS (intelligent transportation system) to replace, until today. In the process, the U.S. Congress twice Bo Jukuan support the development and application of ITS, the European Union and Japan followed, and sometimes even ahead of, not only in developed countries, but also in promoting world-wide Intelligent Transportation System development and popularization.

    Fei-Yue Wang said that China started in the mid-intelligent transportation, because very few cities have this requirement before, but later developed rapidly, especially in the new century, especially before the Beijing Olympics. "I remember back in 1993, I first introduce intelligent transportation access, almost no one understood, and to return the second time in 1995, the situation began to change. In 1999 I was using the North American Impact and Foundation, organized in seven foreign the field of intelligent transportation scholars to China to do ITS talks, clearly felt that the appropriate development and application of heat up in China since 2003. Annual IEEE International Conference on Intelligent Transportation Systems in Shanghai, China for the first time the General Assembly held in Beijing in 2008, held the second in the middle for Beijing is the world's Intelligent Transportation Systems Conference, these are areas of the world ITS highest level of the most representative meeting. In fact, in the eighties, China has had a number of transportation and scientific research departments started to automate and optimization technology for transportation work, such as the Beijing Traffic Management Bureau and the Institute of Automation, Chinese Academy of Sciences and other units, they still remain intelligent transportation research and development in China one of the major forces. "

    We should appreciate that the current large and medium cities in China have begun to take shape the development of intelligent transportation. For example, Beijing has improved the traffic police officers and equipment, construction of a traffic emergency command hardware and software systems. Now, each of the traffic police who are equipped with a GPS positioning device, at the headquarters of the screen can display their location. The device on when faced with an emergency of great benefit to optimal allocation of manpower. In the event of emergency, in limited circumstances, police, police command staff to use GPS to quickly display the event area police officers, police distribution in order to assign the nearest police, arrived at the scene in the shortest time for disposal.

    Meanwhile, as the emergency command system in Beijing is an important component of traffic management emergency response command system and other government security departments have established a coordination linkage mechanism. Once the need for various types of traffic departments directly involved in the incident, the Traffic Management Bureau Command and Control Center will coordinate the work so as to ensure quick disposal. With a set of intelligent transportation emergency command system, greatly reducing the traffic processing time. Before handling a traffic accident scene, it normally takes 30 minutes; and now only need 15 minutes, or even 3 to 5 minutes can be resolved.

    The city emergency management, Fei-Yue Wang has been promoting in recent years carried out a lot of research and development. Such as the establishment "119.gov.cn" similar to the government Disaster Prevention and Emergency website dedicated professional to become financial forum, blog, Digg, tags, real-time, RSS, social networking and other social media technology as one of the portal system will have related links to the Government and the integration of social networks, and provides a dedicated navigation and search tools. Although these systems and tools may not be immediately satisfying, but stick with it, have a good social effect.

    From a little further consideration, you can also use a combination of actual and virtual parallel methods, such as parallel to the emergency management system PeMS (ParallelemergencyManagementSystem), to effectively organize, coordinate, control and management of disaster prevention and emergency response resources, professional training and command staff Emergency mental quality and management level, quantitative assessment of various plans, optimize the online site to provide a platform for the operation system, so that the actual situation, effective combination of peacetime, to those who can predict the unpredictable, can not manage the effects can be managed to make practical, economic , security, reliability, scientific, etc. as consistent as possible.

    "China's logistics accounted for 20% of GPD is huge, while developed countries account for only about 10%, but supported a greater than or equivalent economy, and therefore we transport sector is still much room for development, intelligent transportation will certainly be able to play an important role. in emergency management are also many problems, we must quickly put scientific management into emergency work, people-oriented, the eradication campaign-style emergency mode, reduce waste, improve effectiveness, and strive to achieve 'was silent at hearing thunder 'emergency situation. "Finally, Fei-Yue Wang concluded.

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