Three girls were rescued from a car crash after Taylor Swift’s concert last Friday while using the concert wristbands as emergency flares.

Elizabeth Dazzio fell asleep behind the wheel and crashed the car while driving her sister Caroline and a friend home from Swift’s in Baton Rouge, La.’s LSU Tiger Stadium, WBRZ reported.

While Dazzio was unconscious, the two other girls were trapped. Since their phones were dead, they used the bracelet to capture attention and be rescued from the car. The light-up bracelets flash in sync to Swift’s music during the concert.

A woman and her male companion noticed the lights and helped the girls out of the wrecked car.

The two girls are safe while Dazzio is recovering in the hospital, The Telegraph reported.

Swift was happy that the girls were safe and shared the story on Twitter.

This article was originally posted here.