Swiss Federal Railways is using drones to combat the blight of graffiti.
It costs millions of francs a year to clean train carriages.
The company has been given permission by the Civil Aviation Office to fly at night above the train tracks. The drones are at a height of 30 metres and can spot any trespassing on the railway.
The SBB is not revealing how many times it has used the drones since the programme started in July.
Swiss Post announce job cuts
Swiss Post will eliminate up to 110 positions in 2027, blaming shrinking letter volumes and fewer over-the-counter transactions
Autumn arrives in Switzerland
The heatwave that has gripped Switzerland since May finally breaks tomorrow
Driver warning in Vaud
Drivers in western Vaud face four nights of disruption on the A1 next week.
Mixed results in school classrooms
Swiss 15-year-olds still rank among the world's best in maths and science, but their performance in reading and maths is sliding
Good news for household bills
Swiss households will pay a little less for electricity next year
Fuel reserves now in use
Switzerland is dipping into its emergency fuel reserves for the first time this year to keep petrol and diesel flowing
