Introduced in April 2015, Dover TAP (Traffic Assessment Project) is a temporary traffic management system which queues port-bound lorries in the nearside (left) lane of the A20 after the Roundhill Tunnel to prevent Dover becoming congested with traffic and helping to improve its air quality.
You will be turned back if you are a lorry driver intending to cross the Channel at Dover and you use the right-hand lane. Police and cameras help monitor and enforce this requirement.
You risk being prosecuted if
For more information, visit the Dover Traffic Assessment Project (TAP) guidance website.