Dangerous in the tunnel. In the evaluation phase is still an extension of the system. It's about dangerous signs - identify - about on trucks. These are orange-colored plates, containing two numbers. The first one is a hazardous material class, the second is used to identify the hazardous material. "Automatic detection of these plaques is to increase security in tunnel and bridge areas".
So shall the system, for example, trigger an automatic tunnel barrier, if a loaded truck with hydrogen at a short distance a van with oxygen follows. Also could be in an accident in the tunnel quickly determine whether a truck is driven into hazardous.

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