For thrill-seekers, climbing to the underside of a railroad bridge or standing near
traintracks as a train passes. Don't get too close because there's a vacuum that can pull you into
the train. As soon as the wind starts becoming strong enough to sway you at all pull back
immediately.
Shown in 2009 film Sunshine
Cleaning (2009), one of the main characters goes tressling, climbing to the
underside of a railroad bridge as a train went by
overhead, sending huge amounts of noise and sparks down on her.