Hali: grune traffic lights for blue light with galileo

Hali: Grune traffic lights for blue light with Galileo

As room ride can afford to make the traffic on earth safer, according to the german room ride agency in dlr in berlin is shown. In the local moabit district, a system called hali has just completed the practical test, with the emergency vehicles of police and fire brigade in an emergency riveriger by the road.

Three patrol cars, a rescue and a lot vehicle were equipped with galileo-prs receivers (galileo public regulated service), which also equipped in the test area eight traffic light systems with special communication and traffic technology. As a result, the traffic lights can "privilegation request" recognize and implement, the dlr blows. That’s how the vehicles can log in to these traffic lights with a temporal lead, whereupon these then automatically switch to grun. The emergency vehicles should drive so safely and faster, so do not make before each crossing must be braked.

The coordination of an insert route over several traffic lights takes over thereby "intelligent backend". The central hali server receives from the feed control systems of the fire brigade and police first information about the objectives of the ejected vehicles. The emergency routes correspond to that of fire brigade and police mostly chosen routes.

From finland to germany

The short "hali" derives from "halytysajoneuvojen liikennevaloetudet", what is translated from the finnish "traffic light control for emergency vehicles" means. "Unlike the original system idea from finland, hali-berlin uses highly accurate and at the same time stor- and exchangeable position determination based on the galileo public regulated service (prs) for a green wave for emergency vehicles", describes the dlr.

Clasp preventing that time signal and position deliberately are delayed by spoofing. Prs complicated jamming, targeted interrupting or surplating the signals by a storage source. This double security makes security-critical and demanding applications at all not possible. In addition, the special signal design and the use of different frequencies offers advantages under difficult environmental conditions such as inner-stadtical briefs with shadings.

"In order for the hali system to go over to real operation, the prs reception operated previously operated under laboratory conditions have been further developed to work more reliable and more robust", explains alexander rugamer, hali project manager at fraunhofer iis. The special sensor must be withstand the weather conditions as well as stob- and acceleration occurrences in the vehicle. Likewise, the devices were optimized with a view of coarse and weight and also with regard to their energy promoter.

Fancy galileo

The german space agency in the german center for aerospace (dlr) calls in the project hali the test company novel galileo prs receptionist with funds of the federal ministry of transport on the dlr institute for transport system technology and the fraunhofer institute for integrated circuits iis’s development. Further involved are the berlin senate administration for the internal and sport as well as the senate department for the environment, transport and climate protection, the police berlin, the berlin fire brigade and siemens, airbus, iabg and the alarm dispatcher systems gmbh partner.

The european satellite navigation system galileo should actually go in 2008 in full operation; the system, for the 28 satellite the earth circle, has been in operation since 2017 and was completed in 2019. In contrast to gps and other systems, for galileo is an authentication service intended to avoid the transmission of manipulated or folded position data.

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