The Blackwall Tunnel (A102) is one of the busiest places on London’s road network. In recent years, journey times have increased and drivers can expect delays to their journey at some times of day. We’ve released this data to the open data community, to enable developers to build the information into their products.
What our data shows
*Follow this link to find the data.
1) The busiest time in the northbound tunnel on a weekday is from 07:00 – 07:30. In heavy traffic conditions, drivers’ journeys could be 15 minutes quicker if they travelled between 06.30-07.00 instead of 07:00 – 07:30.
2) The busiest time in the northbound tunnel on a weekend is from 13.30 – 15.00. In heavy traffic conditions, drivers’ journeys could be 15 minutes quicker if they travelled between 12.00-13.00 instead of 13.30- 15.00.
We have made this data available to the open data community so you can use it to create products which display the busiest times at the tunnel, allowing drivers to choose to travel outside of these periods or create products for planning quicker and more reliable journeys.
Tell us what you think
We encourage the community to provide feedback on our new data sets to help us continue to enhance and improve our open data products. Please let us know your thoughts in the comments section below or on our tech forum.
Hi Stephen – this looks very interesting. I may be being a bit dim, but I can’t see the data from other times of day – only the busiest times. What I’d like to know (as a user of the tunnel) is what time on a Friday pm it starts getting busy. I want to get through it around 4.30pm but I’m wondering if it will already be congested (based on your data) or not … any help/data gratefully received! Thanks.
Hi Chris – the info for the full 24 hours is in the data file – I’ve altered the accompanying visuals in the spreadsheet to make that clear. 4.30pm on a Friday is busy but not too bad!
Whereabouts is this data please?
Hi Rob, the data is here: https://tfl.gov.uk/info-for/open-data-users/our-open-data?intcmp=3671#on-this-page-4. Thanks for the comment, I’ve now added in a more prominent link in the post itself.
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