A radio-apparatus is described which is in use in Germany along the freeways, to warn the drivers (of special equipped lorries) for traffic congestions, accidents or weather circumstances. Till navon this is only in a research phase.
In: Wegverkeer en elektrotechniek :verslag van het congres gehouden ter gelegenheid van het 13de lustrum van de Elektrotechnische Vereeniging te Delft op dinsdag 23 maart 1971, p. 57-74
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