A train had to apply its emergency braking at Hoghton level crossing on Sunday (31 January).
The train had to stop near Preston when a a group of six people were spotted on the lines.
British Transport Police Lancashire have confirmed that the six people were taking selfies on the tracks.
Network Rail want to remind people about their 2018 campaign, Bossing the Crossing.
According to them the number of pedestrian level crossing incidents is increasing each year, particularly during the Coronavirus pandemic as people explore new and unfamiliar walking routes.
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People should pay attention to all signs at pedestrian crossings on rail tracks and stay aware of their surroundings.
Read more: See the latest Preston news and headlines
What do you think about the selfie takers? Let us know in the comments below