US politicians are considering new legislation that would allow authorities to intercept or shut down drones that get too close to airports. The US Senate passed the measures, part of a general aviation bill, on Tuesday in response to rising concerns about drone safety. It follows a suspected collision between a drone and a British Airways plane near London's Heathrow Airport. Start-ups are already lining up to offer solutions to the problem. The FAA (Federal Aviation Authority) reauthorisation legislation, passed by the US Senate, could also pave the way for the commercial deployment of drones in national airspace - but comes with several safety caveats.