Operation Brock Set to Kick In on M20 After Snow Delay
The long-awaited Operation Brock contraflow system on the M20 in Kent is finally going live. Originally due overnight Sunday, heavy snow pushed the debut back. Now, it will be fully operational when the motorway reopens at 6 a.m. on Wednesday, December 14.
M20 Shut for Overnight Installation
The M20 will shut between 9 p.m. Tuesday and 6 a.m. Wednesday. The London-bound carriageway from junctions 9 to 8 and the coastbound from junctions 7 to 9 will close while the barriers and signage go up. Clear diversion routes will guide drivers during the works.
Controlling Heavy Goods Vehicles to Keep Traffic Moving
Operation Brock is designed to keep the M20 flowing both ways during peak periods by using a contraflow system. Once locked in place, all HGVs heading to the Port of Dover or Eurotunnel must follow signs directing them to Operation Brock at junction 8.
“Any EU-bound HGVs that ignore signs and try alternate routes, like the M2/A2 at Brenley Corner, face a hefty £300 fine,” warns National Highways. “Police or enforcement officers may also order them to the back of the queue.”
Advice for Other Drivers
Coastbound traffic not caught in Operation Brock—such as local freight and car drivers heading to Europe—will be guided onto the London-bound carriageway contraflow. Drivers planning to use Eurotunnel or Port of Dover urged to check travel details before setting off.
