Nova Scotia highway webcams are operated by the Nova Scotia Department of Transportation and Infrastructure Renewal (TIR). They are mounted on tall steel towers, most of which have weather sensors included on the tower. The sensors measure temperature, humidity, barometric pressure and wind direction and speed.
The webcam pic below is more or less real time and will update every 15 to 30 minutes, depending on conditions.
This webcam is on the west side of Highway 104, the Trans Canada Highway, about a third of a kilometer north of the interchange for Highway 2. Looking north up the highway, the camera is not much more than a kilometer northwest of the city of Amherst.