Traffic cameras have long been an annoyance to drivers who run red lights, a safety measure for pedestrians, and a source of revenue for governments.
The US city of Chicago is now taking the technology one step further, installing new radar-based traffic cameras that can see in all directions.
But, the new network of hi-tech cameras is making some people uneasy.
Al Jazeera's John Hendren reports from Chicago.
Source: Al Jazeera