Russian men are attempting to leave the country, causing queues to form at border crossings, as they try to avoid a military call-up for the Ukraine war.
President Vladimir Putin announced a partial military mobilisation on Wednesday, which could see 300,000 people summoned to serve in the war.
The Kremlin says reports of fighting-age men fleeing are exaggerated.
But on the border with Georgia, miles-long queues of vehicles have formed including men trying to escape the war.
One man, who did not want to be named, told newmen he had grabbed his passport and headed to the border, without packing anything else, immediately after President’ Putin’s announcement – because he fell into the group that could potentially be sent to the war.
Some witnesses estimated the queue of cars at the Upper Lars checkpoint to be some 5km (3 miles) long, while another group said it had taken seven hours to get across the border. Video from the scene showed some drivers leaving their cars or trucks temporarily in standstill traffic.
Georgia is one of the few neighbouring countries that Russians can enter without needing to apply for a visa. Finland, which shares a 1,300km (800 mile) border with Russia, does require a visa for travel, and also reported an increase in traffic overnight – but said it was at a manageable level.