The A12 Eastern Avenue is East London's principal arterial, running from Hackney through Leyton, Wanstead, Redbridge and Gants Hill to the M25 at Junction 28. It is a dual carriageway for much of its length, with the elevated East Cross Route section in Hackney and Stratford being one of the most recognisable stretches of urban elevated road in London. The A12 carries substantial commuter traffic from East London and Essex into the City, as well as freight heading to and from Tilbury Docks and London Gateway.
The A12 East Cross Route through Hackney and the Bow interchange (A12/A11) is East London's most congested stretch, with queues forming from around 07:15 on weekday mornings. Incidents on the elevated section are particularly disruptive as there are no alternative exits, causing long tailbacks along the approach roads. The Wanstead and Gants Hill area is generally freer but backs up during incidents on the A12 or M11. The approach to the M25 at Junction 28 is also a regular congestion point.
Morning peak: 07:30–09:30 · Evening peak: 16:30–19:00
Outside these windows, the A12 typically flows much more freely. Saturdays can be busy between 11:00–15:00.
These TfL JamCam feeds cover the A12 across London. Each image updates every 5 minutes — click any camera to see the full live feed and nearby cameras.
Showing 8 of 31 A12 cameras. Browse all cameras →
Typical congestion levels on the A12 by hour. Green = free-flowing, red/orange = heavy delays.
| 00–05 | 05–07 | 07–08 | 08–09 | 09–10 | 10–12 | 12–14 | 14–16 | 16–17 | 17–18 | 18–19 | 19–21 | 21–24 | |
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| Mon–Thu | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ |
| Friday | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ |
| Saturday | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ |
| Sunday | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ | ▓ |
The Bow interchange can go from moving to gridlocked very quickly around 07:15–07:30 — departing before 07:00 makes a significant difference.
If the A12 Gants Hill section is congested, Wanstead High Street (A1006) provides a useful surface road alternative.
For City and West End journeys, the Elizabeth Line from Stratford, Maryland or Gants Hill is often faster during peak hours than the A12.
The elevated East Cross Route cameras give the earliest warning of A12 conditions heading towards London — check these first.
If the A12 is heavily congested, these alternatives are worth considering:
The entire A12 within Greater London is inside the ULEZ. There is no Congestion Charge on the A12. ULEZ applies 24/7. Non-compliant vehicles pay £12.50 per day. Check at tfl.gov.uk/ulez.
The Bow interchange handles traffic from three major routes simultaneously — the A12 Eastern Avenue, the A11 Mile End Road, and the approach to the Blackwall Tunnel. Any incident on any of these routes immediately affects the others. The elevated East Cross Route's limited entry and exit points mean once a queue forms, it can extend for several miles with no relief possible.
The A12 is an A-road, not a motorway. The elevated East Cross Route section in Hackney resembles a motorway in character — dual carriageway, no pedestrian access, and limited junctions — but learner drivers, mopeds and cyclists are all permitted. Speed limits vary from 30 mph to 50 mph along the route.
The A12 evening peak runs from about 16:00 to 19:00, with the Bow interchange area typically clearing around 19:30 on weekdays. Fridays can take until 20:00 to clear. The Wanstead and Gants Hill sections clear faster, usually by 18:30–19:00.
The A12 connects to the M11 at Junction 4 near Redbridge/Wanstead. From there, the M11 northbound runs directly to Stansted Airport. The journey from central London via the A12 and M11 takes around 45 minutes to an hour in normal conditions — roughly comparable to the M25/M11 route from West London.