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12th International Scientific Conference, April 20-22, 2009 Brno, Czech Republic 71UNIFIED TRAFFIC INFORMATION SYSTEM FORTHE CZECH REPUBLIC (JSDI) IN PRACTICETomáš MinibergerAbstract: Ministry of Transport, Ministry of Interior, Road and Motorway Directorate ofthe Czech Republic and other institutions have been working on the Unified TrafficInformation System for the Czech Republic (JSDI) project. The system provides complexenvironment for traffic data acquisition, processing, sharing, publishing, and distribution.The data include traffic information, current traffic situation news, and traffic events thataffect road traffic safety and smooth flow. The JSDI includes the Central Road Registry.The main operation site of the JSDI is the National Traffic Center in Ostrava. From there,the information is published on the traffic portal (www.dopravniinfo.cz). Furthermore, thedata is distributed using RDS-TMC and displayed on PIT (Variable Message Signs). Datadistribution interface is used to bring the vital information to different public serviceinstitutions, media, telecommunication operators, traffic news services, transportcompanies and others.1. IntroductionGenerally, we need to deliver passengers or cargo along the road in a reliable, safe and timeeffective way. This is the task everyday thousands of drivers, dispatchers and other road-trafficrelatedpeople are concerned about. Even every single "ordinary" driver wants to get to hisdestination as much safely, smoothly, quickly, and directly as possible.2. What is the solution?As the road traffic grows every day and there is lack of high-capacity roads, this simplerequirement gets more complicated than ever. Moreover, the demand for road traffic performance isstill going to increase and there will hardly be matching "new" road capacity in some parts of theroad network. This scenario will result in heavier congestion, traffic jams, frequent accidents,extensive losses on property, and serious injuries of people. Also, the road aging will requirefrequent repairs that will expose traffic closures. All these are key factors that affect the road trafficreliability.To reach maximum personal benefits from road traffic, three groups of factors need to be takeninto account.- The law that outlines the rules (for instance, the speed limits, manner of traveling, and so on)- Dependence on other drivers (our decisions depend on others' decisions; we do not actuallyknow their decisions at the time we have to make our decisions; in fact, we do not knowconsequences of the way the others do their decisions, for instance caused traffic accidents)- Common conditions including road condition, visibility, wind, road surface status, closures,detours, and so onIng Tomáš Miniberger., VARS BRNO a.s.,tomas.miniberger@vars.cz
7212th International Scientific Conference, April 20-22, 2009 Brno, Czech RepublicSimply put into words, a traffic system acts like a computer game in non-cooperative mode. Tocooperate better with each other, we need traffic information that describe decisions of others. Also,we need traffic data that can define common conditions and affect/control decisions of other roadtraffic entities.In order to keep drivers informed and support their effective decisions, it is necessary toprovide them with traffic information and traffic data concerning current state of traffic.3. What is JSDI?Every entity active in road management and maintenance can include traffic information andtraffic data in common agendas of operation. This applies to anybody who carries on supervisionand traffic control activities. The list above obviously includes any road users in general. Each ofthem can more or less receive specific traffic information and traffic data that he needs.JSDI is a complex system environment for collection, processing, sharing, publishing, anddistribution of traffic information and traffic data. It is a common project of Department ofTransport, Department of the Interior, Road and Motorway Directorate, and other organizationsaccording to §124 par. 3 of the Act. No. 361/2000 and executive notice No. 3/2007 about the trafficinformation system, and Czech government decree No. 590/2005 from May 18th, 2005.The JSDI contains several key parts as follows.a. Current traffic information from agenda systems and driver reportsb. Telematic systems and traffic datac. Road information including road components and accessories (Central Road Registry)d. National Traffic Information and Control Center (NDIC)e. Distribution and publishing of traffic information and traffic dataf. Systems for traffic engineering and decision making in the road traffic safety contextg. Crisis management and defense planning support systemsh. Education, edification, and promotion related to traffic information and BESIP activitiesThe Police, Fire Service, Emergency Medical Service, road managers, road managementoffices, city Police departments, Czech Hydrometeorological Institute, and other organizationshandle daily extensive amount of information related to traffic situation. Base on analysis results,JSDI has created several conditions that extract the data attributes from "agenda" systems of theorganizations listed above. Then, the data is automatically sent to National Traffic Information andControl Center.Among others, the information systems of the police departments and fireman rescue forceshave been updated. New systems have been created as well, including Central Registry of Closuresfor road management offices, Winter Maintenance Information system, Winter MaintenancePerformance, and Unified Road Meteorology Information System.The JSDI includes creation of telematic systems. By the end of 2009, the most heavily usedmotorway in the country (D1) will benefit from complex monitoring camera system, traffic flowmonitoring system, vehicle count and classification, jam detection, traffic management, variablemessage displays, variable traffic signs, weigh-in-motion (WIM) system, and further state-of-arttechnologies.
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