Deutsche Bahn, Germany’s railway company, will deploy a fleet of md4-1000
“quad copters” to police its train depots and maintenance yards to
protect them from vandals and graffiti artists, a menace that inflicts
$10 million in damages annually. Developed by Microdrones in Siegen,
Germany, the drone is equipped with a high-resolution, infrared camera
and operates in near silence. It can zip around DB property at heights
of up to 500 feet and broadcast live footage of what it sees to security
officers on the ground.