Operation Brock caused serious traffic problems on the M20 and M2, with traffic queuing for miles for much of the day.
Motorists faced heavy congestion on the M20 from Junction 8 near Leeds Castle and Maidstone services to Junction 7 at Detling.
The coast-bound carriageway was closed with traffic cameras showing queues that earlier this afternoon stretched for five miles.
Drivers faced delays of up to 50 minutes.
Police were at the scene along with National Highways to help with traffic management.
Nationals Highways has advised non-EU freight traffic to follow the hollow circle detour symbol and leave the M20 at J8 and take the second exit at the roundabout onto the A20 eastbound towards Ashford.
From here they should follow the A20 via Harrietsham, Lenham and Charing to the Drovers roundabout and take the first exit to continue on the A20 towards the M20.
Drivers should then continue along the A20 to the M20 J9 roundabout and take the 3rd exit onto the M20 towards the coast.
EU traffic is advised to leave the M20 at the J8 slip road and join the M20 via the entrance slip road at the same junction.
Meanwhile, there are long delays and queues on the M2 towards the coast from Junction 3 for Chatham, Rochester and Maidstone to Junction 7 at Brenley Corner.
There were also big delays at Folkestone and Dover today.
Bad weather this morning is still impacting the Port of Dover, with ferry company DFDS reporting a disruption in services.
A spokesperson said: “Due to adverse weather conditions and technical issues, we are currently experiencing delays on all of our sailings.
“To customers already registered at our ports, rest assured that our DFDS representatives are present in the car lanes and will be able to assist you.”
It comes as P&O ferries still do not depart from the port – two weeks after laying off 800 workers and recruiting replacement agency staff.
Dover TAP was also in place today.
This involves lorries queuing on one side of the A20 as it approaches Dover, so the town is not congested.
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Earlier in the day, queues trickled up to Folkestone.
The Roundhill Tunnel was also closed towards the coast. This caused delays from J13 to J11 of the M20.
A diversion was in place along the A259 and A260 but the tunnel reopened around 7.30pm.
There are also continuing to be problems on the A2 where Jubilee Way is closed towards the coast due to lorries waiting to board a ferry and stop further to join between the A256 Whitfield roundabout and the roundabout. point Eastern Docks.
This morning Scott Janaway tweeted: “My daughter has been stuck on the A2 just before Whitfield roundabout northbound for over an hour. Because the lorry is blocking both lanes. What’s going on -he ?”