The camera systems run continuously while the buses are in operation, writing then overwriting video unless a driver “tags” an event by pushing a button within reach of his seat, permanently saving it to the camera’s memory. The idea is to cut the risk of violence or crime on public transit, with clearly visible cameras acting as a deterrent to would be attackers. Should a crime actually be perpetrated, the cameras are able to record video evidence.

Once the bus re-enters the station, video is automatically downloaded, using the MOTOMESH network, into a storage solution.

“Traditionally, you’d have to send somebody onto that bus and download the video onto a laptop. When you’re using a wireless network, what you can do automatically is download the video wirelessly, says Bethany Moir, marketing manager.

There are currently five to seven cameras in use on 2,100 buses in Stockholm, allowing for 250 GB of local storage per bus. In total, there are 15,000 cameras in operation, including those used in bus stations.

Moir says the company is speaking to several transit authorities in the U.S. to sell solutions similar to the one deployed in Stockholm. Another potential user, she says, are school buses.