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Rotten bridges and highways, the raised population density and car penetration as well as daily and long-time roadworks are just a few reasons of the modern transportation challenge: the steadily increase of traffic density. This unavoidable trend also comes along with the well-known negative effects such as traffic jams, car accidents and CO2 emissions. Hence, current research approaches aim on generally...
The steadily increasing traffic density is causing enormous negative effects such as jams, accidents or CO2 emissions, especially in urban areas. In Europe more than 12% of the traffic network is daily congested. Hereby a reliable and dynamic congestion forecast is the key to avoid and/or compensate such locale bottleneck situations. Hence, this contribution focuses on a cloud-aided, lane-specific...
Positioning techniques based on satellite navigation systems are nowadays standard in most commercial vehicles. But GPS receivers in general are effected by multipath and atmospheric effects and hence their performance may be decreased, especially in challenging environments that directly affects the usage of satellite-based positioning in traffic-relevant and by that safety-critical systems. Therefore,...
Future smart traffic environments require very accurate positioning of vehicles to allow for sophisticated traffic flow modeling or autonomous control of cars. To avoid traffic congestion on motorways, a lane-specific localization of vehicles is required to allow for the detection of short-term deviations of traffic flows due to roadwork or accidents. In this paper, we investigate the accuracy of...
In this paper, the authors present a proof-of concept demonstrator for an adaptive inter-system-interface gateway between LMR and IP based networks. To underline the flexibility of the proposed solution, a satellite link is utilized to enable the integration of an independent LMR cell or direct connected terminals (MicroSpot) into an existing infrastructure over long distances without the need for...
Satellite systems may integrate Standardized Digital Professional Mobile Radio systems into an existing infrastructure over long distances without the need of dedicated transport networks, even in disaster relief situations. Simulation-based decision support can predict possible interferences like shadowing or multipath effects, but especially in time-critical emergency scenarios, a trade-off between...
The travel time estimation of vehicles is a major challenge in the area of dynamic traffic prognosis. Our approach is to increase the number of considered sensor objects in the road network. For this purpose Floating Car Data (FCD) including travel time information of vehicles is transmitted to a server via Long Term Evolution (LTE). In this paper, the benefit of FCD on the accuracy of travel time...
The European satellite navigation system Galileo is a highly promising technology and offers communication capabilities that can be bridled to provide an enhanced Search‐and‐Rescue (SAR) service in combination with the system, currently in service, Cospas‐Sarsat. In order to enhance the process of retrieval during a rescue operation, this article proposes a Short Messaging Service (SMS) by utilizing...
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