These photographs are simply traffic-stopping.

Lucas Zimmermann’s long exposures of a set of traffic lights near Weimar in central Germany are going viral, for all the right reasons.

The 23-year-old Bauhaus University student actually snapped the images in 2013, but they gained international exposure this week after Reddit user dittidot posted one of the pictures online.

Zimmermann, who is studying visual communications with a focus on photography, said he came up with the concept in a “purely intuitive” way.

“I was lucky to be at the right place at the right time,” he told The Huffington Post this week.

See more of Zimmermann’s photographs on his Behance account, Facebook page and website.