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8,553 cams
Camivu lists 8,553 live traffic cams: junctions, motorway gantries and bridge approaches, almost all of it published by road and 511 agencies as open data. Every listing points at the feed its operator publishes; Camivu hosts no video. Not every camera sends video. Plenty of agencies publish a single image and overwrite it every few seconds or minutes, so the page shows a still that refreshes instead of a moving picture. Some agencies also serve their images only to addresses inside their own country, which is why a cam can play for one visitor and refuse another. A camera that goes dark keeps its page: the picture comes back when the camera does.