Heavy snowfall in Poland caused massive traffic jams overnight, stretching up to 20 kilometers along a highway between the capital Warsaw and the Baltic city of Gdańsk, police said today.

Although hundreds of people were stranded in their vehicles in very low temperatures until the early morning hours, traffic has now started moving again, according to the police.

A severe snowstorm hits Poland, causing major traffic jams and road disruptions, while services struggle to clear the streets. pic.twitter.com/BD2KKwJXIl

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“The difficult situation began yesterday after 4 p.m., when the first trucks on the S7 highway started having trouble climbing uphill sections,” said Tomasz Markowski, a police spokesperson in the northern city of Olsztyn. “This led to traffic chaos stretching about 20 kilometers during the night.”

Deputy Infrastructure Minister Stanisław Bukowiec said at a press conference that there were no injuries.

The state news agency PAP reported that there were also some problems on the rail network and at airports, but operations have since been restored.