Live London Traffic Cameras — Watch 900+ TfL JamCam Feeds Online
TfL JamCam is Transport for London's network of over 900 traffic cameras installed across the capital's road network. Each camera transmits a live image or short video clip every five minutes, accessible free of charge via TfL's open data API. Tailback aggregates all active feeds into a single interactive map, updated in real time.
If you've ever sat in standstill traffic on the A10 and wondered whether the blockage is a broken-down lorry or roadworks — you could have checked before you left. TfL's JamCam network gives any member of the public a live window onto every major London road. This guide explains how the system works and how to use it.
What Are TfL JamCam Cameras?
JamCam is TfL's traffic monitoring camera network, managed by Surface Transport and used by the Traffic Control Centre to manage signal timing and dispatch incident response teams. As part of TfL's open data commitment, the camera feeds are made publicly available through the TfL Unified API.
The cameras are CCTV-grade fixed units mounted on lamp posts and gantries. They capture a still image or a short clip (typically 10–15 seconds) on a rolling 5-minute cycle. The images show real-time road conditions — queuing traffic, incidents, roadworks and clear roads alike.
Camera coverage
| Area | Approximate camera count | Key roads covered |
|---|---|---|
| Central London | 280+ | A40, A4, A3, A201, Embankment |
| North London | 160+ | A1, A10, A406 North Circular |
| South London | 180+ | A2, A23, A3, A205 South Circular |
| East London | 140+ | A12, A13, A11 |
| West London | 150+ | A4, A316, A40 Western Avenue |
How to Watch Live London Traffic Cameras
- Open Tailback — Go to tailback.vpnetworks.co.uk/app.html. The map loads immediately. No account or sign-up required.
- Navigate to your road — Use the search bar in the top panel to enter a road name, area, or postcode. The map will centre and zoom to that location.
- Identify camera pins — Green camera icons mark active JamCam feeds. Grey icons mark cameras that are temporarily offline (typically 5–10% of the network at any time).
- Click a camera pin — A side panel opens with the live camera image or video. You'll also see the road name, camera ID, and a timestamp.
- Check multiple cameras — Pan along your route and click cameras at key junctions to build a complete picture of conditions ahead.
Understanding What You See
Camera images alone tell you a great deal — but combining them with the traffic flow overlay (the coloured road lines on the Tailback map) gives a fuller picture:
- Green road lines — Traffic moving freely, above 80% of normal speed
- Orange road lines — Moderate congestion, 40–80% of normal speed
- Red road lines — Heavy congestion, below 40% of normal speed
- Dark red / maroon — Near-standstill or stationary traffic
This data comes from TomTom's real-time traffic flow API, updated every few minutes from GPS probes and road sensors across the network.
Frequently Asked Questions
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