A crash on the Dallas North Tollway in Plano snarled morning traffic there in both directions Thursday.
A silver Infiniti was heading northbound on the tollway just before the exit for Parker Road when the driver clipped a box truck causing the truck to roll on its side, according to Department of Public Safety Trooper Lonnie Haschel.
The driver of the Infiniti fled the scene on foot, Haschel said.
The truck driver was taken to Presbyterian Hospital in Plano with non-life threatening injuries.
When the truck rolled, it hit the center median, causing lanes in both directions to be closed. That had traffic backed up in both directions for miles.
Most of the crash was cleared around 7 a.m., but crews said the inside lanes would remain closed while NTTA crews inspected the center median for damage.
The search for the driver of the car is ongoing.
