Delays caused by a backlog of French-bound traffic after port problems in Calais are continuing on the M20 motorway.
Ferry operators have been forced to halve their services
Operation Stack, when lorries park on the motorway, was implemented again on Friday morning between junctions 11 and 12, coastbound.
It was hoped the Calais port would be running normally by Friday afternoon.
Two berths at the port were closed after a cable snapped last week, which led to three people being injured.
Two lorries also overturned after the support cable snapped as the ferry was being unloaded.
The incident left just two berths operational for ferry operators P&O and SeaFrance to use.
P&O day trips were cancelled until Monday 21 February because of the delays.
On Wednesday, the ferry operator reported delays of five hours on sailings from Dover to Calais.
Sailings were halved, with 15 crossings a day instead of 30.
The Freight Transport Association said the disruption was costing the transport industry at least £4m a week.
Operation Stack was put in place for four hours on Wednesday morning, then overnight from Wednesday afternoon to Thursday morning, and then reactivated on Thursday afternoon.
Kent Police said it was implemented again on Friday morning.