Nova Scotia highway webcams are operated by the Nova Scotia Department of Transportation and Infrastructure Renewal (TIR). Most 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 30 to 40 minutes, depending on conditions.
This highway camera is mounted on the west side of Highway 374 at a high point in the road, at a tiny cummunity named Trafalgar. The camera looks north up a straight stretch of road. Highway 374 runs north-south between New Glasgow, to the north, and the south coast about 100 kilometres east of Halifax.