Re:French lawmakers approve a ban on short domestic flights
by Symbiote on Tuesday April 13, 2021 @03:55AM
(#26789354)
(Among developed countries I'm familiar with) it's only the USA that has the excessively loud train horns at level crossings, and a lot of crossings. In Europe, lights, bells (or a beeper thing) and automatic barriers are used instead, sometimes with automatic or manual infrared/visible cameras to confirm the crossing is clear of road vehicles.
I'm not sure what noise has to do with efficiency - I doubt that the energy expended on vibrating the air is physically or economically significant - but it is worth noting that trains are loud. Particularly because regulations written in blood require that they blow their horns three times at every level crossing at all hours.