Automatic toll sticker monitoring
In addition to the manual control, toll stickers are monitored using cameras. If for reasons of road safety the toll control staff cannot stop vehicles, automatic toll sticker monitoring (AVK) is used (for example on multi-lane urban motorways). Nine camera systems are currently in use. The locations of the mobile devices change every seven to 14 days.
This is how the "electronic eye" works
The camera housing is installed above a traffic lane, from where it checks vehicles of 3.5t maximum permissible weight. The recording system identifies vehicles without a valid toll sticker. In suspected cases only, the system records and stores a large image that includes the number plate and a detailed image of the windscreen. The staff at the ASFINAG Enforcement Center then check these images again manually to make sure they are accurate.