"Yesterday, we had 1,000 lorries cross over from Dover. As of 10:00 am (0900 GMT) we already had 550 lorries from Britain," Benoit Rochet, head of the Calais port operator, told AFP.

"At this rate, the situation should be completely taken care of by tomorrow," he said.

The port remained open despite the Christmas holiday so that ferries as well as the trains bringing trucks through the Channel Tunnel could operate -- but only for trips from Britain to France.

Getlink, the Eurotunnel operator, said 478 trucks had arrived in Calais by 11:00 am, after 1,942 were brought over Thursday.

Most of the drivers headed straight for the highway, according to an AFP journalist at the scene.

Truckers were stranded in southeast England after France halted all travel from Britain on Sunday for 48 hours in a bid to prevent a new strain of coronavirus, which experts fear to be more contagious, from reaching its shores.

The move created a massive logjam with up to 10,000 trucks parked along highways as well as on the runway of the Manston airfield, according to EU transport commissioner Adina Valean, who criticised the French government's decision.

Drivers fumed at having to spend Christmas in their cabs away from their families with only minimal toilet facilities because they were unable to get the Covid-19 tests that must be negative to be allowed into France.

Twenty-five French firefighters were again dispatched to Dover on Friday to help carry out tests, following a first team sent over Thursday.

France's Transport Minister Jean-Baptiste Djebbari tweeted that more than 1,000 Christmas Eve meals had also been sent to stranded drivers, distributed with the help of French Red Cross volunteers.

Britain's defence ministry said Friday that an additional 800 personnel had been deployed on top of 300 already on site to step up coronavirus tests for drivers and "help clear the backlog of vehicles."

"There is a need for increased testing as more vehicles continue to arrive every hour," the ministry said on Twitter, adding that the teams would also deliver food and water to drivers waiting to return home.

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GETLINK