Traffic management system VAMOS4
Project manager : Dipl.-Ing Matthias Körner
Dipl.-Ing. Sebastian Pape
Henning Jeske
Project duration: 12/2017 -
External project partners: Landesamt für Straßenbau und Verkehr
Brief description: The new traffic, analysis, management and optimization system VAMOS4 is based on experience and expertise from more than 20 years of research and development work by the Chair of Traffic Control Systems and Process Automation.
The rapid development of systems, components and technologies in the field of informatics and communication as well as the change in requirements for traffic telematics systems (e.g. automated and connected driving, infotainment equipment of vehicles) have made it necessary to create and implement a completely new system design.
Due to the development of the components as well as the system maintenance of VAMOS2, a very deep and broad expertise is available at the professorship to tap optimization potentials. Even the smallest adjustments to action sequences can result in far-reaching requirements for the system design.
The new development VAMOS4 is composed of basic components and functional modules.
Basic components cover the functionalities which are needed independently of the concrete application(s). These are the basic service and database architecture, the data fusion service and the basic functionalities of the user interface.
The functional modules cover very specific functionalities in the context of the desired applications. Here, the spectrum ranges from monitoring applications for the quality management of sensors and actuators, to tools for providing traffic and operational statistics, the logics of information and control systems, etc., to exchange services for data and information for networking and coordination.
Classic sources in road traffic management are inductive loops and infrared detectors, floating car data, and Bluetooth captures. For high-quality traffic management, knowledge about traffic space restrictions is of particular importance. New data sources, such as CAM and DENM messages, data provided in the MDM, traffic data from vehicle fleets, and data from various apps, are increasingly available.
With regard to the traffic environment, knowledge about the occurrence of icy conditions, heavy rain and fog is of particular interest. In the future, environmental data such as noise, air pollutants and abrasion will play an increasing role in traffic management.
Position data and the timetable situation are essential when considering public transport.
Core parameters in the data processing of VAMOS4 are the
- Traffic situation (in the sense of the quality levels of the traffic flow),
- traffic volume and
- travel time.
These are processed step by step, starting with data from the sensor system, enriched with estimated values from historical data sets if necessary, and final parameters are derived, which form the basis for visualizations and the logics of the actuator system.
The classic information spectrum of the actuator technology of telematics systems is aimed in particular at
- Sensitizing road users to negative events that they cannot perceive or perceive only with difficulty (e.g., icy roads), that impair their cognition (e.g., poor visibility), or that are outside their field of vision (e.g., road closures, traffic jams, accidents),
- Influencing driving behavior, in particular to comply with road traffic regulations for the protection of road users and their environment (e.g. reactions to excessive speed or insufficient distances),
- influencing the choice of route, in order to steer traffic flows in the sense of an optimum for society as a whole (e.g. by providing incentives or concrete specifications), and
- influencing the choice of means of transport by making it more attractive (e.g. giving priority to public transport) and providing incentives for the use of environmental transport. Different media with information output in the street space as well as in the vehicle or on mobile devices are used.
On the one hand, VAMOS4 focuses on collectively acting systems whose measures serve to approximate the optimum for the overall system. For this purpose, VAMOS4 can activate actuators in various ways. The spectrum of possibilities ranges from the provision of pre-processed data, which still have to be interpreted, to concrete information contents to be output, which still have to be formatted by the actuator system, to concrete actuating and control commands for the externally effective actuator components.
On the other hand, VAMOS4 meets the increasing requirements from the field of automated and connected driving. Available and processed information must increasingly be made available to road users individually via various communication channels. Here, VAMOS4 takes over the content provider function.
Due to the architecture of VAMOS4 with basic components and function modules, scalability for various dimensions of use cases is given. This means that it can be used for telematics solutions for single nodes, node combinations, streets, network meshes and even wide-area networks.
Assigned research topics:
- Optimal control of traffic processes
- Telematics deployment
- Coordinated control of traffic control systems
- Traffic situation determination from heterogeneous online traffic data
- Data from C2I (RSU)
- Dynamic modeling of traffic on trunk roads
- Operational traffic management
- Traffic control systems and centers