What is a Drag Strip, you ask? Racers Dating answers your questions.
A drag strip is more than a straight-line quarter mile strip of asphalt. There are actually several parts to a drag strip.
Pre-Stage beam: A light beam-to-photocell connection in each lane that triggers the small yellow pre-stage lights atop the Christmas Tree. The pre-stage lights signal to drivers that they are close to staging, approximately seven inches behind the starting line.