Warning day in NRW, state-wide warning devices such as sirens, warning apps, cell broadcast and digital information boards were triggered with a test

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Warning day in NRW, state-wide warning devices such as sirens, warning apps, cell broadcast and digital information boards were triggered with a test alarm, also on digital display boards of cabs, to uncover problems in technology and cooperation, Düsseldorf, Germany

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Size: 9155px × 6103px
Location: Düsseldorf, Germany
Photo credit: © Jochen Tack / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: alarm, alarmieren, boards, broadcast, cell, civil, day, defense, digital, display, emergency, information, means, mobile, north, nrw, phones, practise, protection, rhine-westphalia, security, sirens, taxes, taxi, technology, test, trial, warn-apps, warning