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Vehicles are piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor-trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( APTOPIX Turnpike Crash )

Vehicles are piled up from an accident Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor-trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( Turnpike Crash )

Vehicles are piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( Turnpike Crash )

A firefighter checks in on motorist in one of many vehicles involved in pile up accident, Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( Turnpike Crash )

Rescue and fire personnel assist on the scene of a 100 car chain reaction pileup accident on the Pennsylvania Turnpike eastbound February 14, 2014 in Feasterville, Pennsylvania. Icy weather conditions contributed to the accident. It is expected to take hours to remove all of the debris from the massive crash scene, which stretches for miles. (Photo by William Thomas Cain/Getty Images) ( 469364825 )

Rescue and fire personnel assist on the scene of a 100 car chain reaction pileup accident on the Pennsylvania Turnpike eastbound February 14, 2014 in Feasterville, Pennsylvania. (Photo by William Thomas Cain/Getty Images) ( 469364815 )

Rescue and fire personnel assist on the scene of a 100 car chain reaction pileup accident on the Pennsylvania Turnpike eastbound February 14, 2014 in Feasterville, Pennsylvania. (Photo by William Thomas Cain/Getty Images) ( 469364853 )

Vehicles are piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( Turnpike Crash )

Rescue and fire personnel assist on the scene of a 100 car chain reaction pileup accident on the Pennsylvania Turnpike eastbound February 14, 2014 in Feasterville, Pennsylvania. Icy weather conditions contributed to the accident. It is expected to take hours to remove all of the debris from the massive crash scene, which stretches for miles. (Photo by William Thomas Cain/Getty Images) ( 469364821 )

Vehicles are piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( APTOPIX Turnpike Crash )

A Pennsylvania state police officer takes a statement from a victim of the crash on the scene of a 100 car chain reaction pileup accident on the Pennsylvania Turnpike eastbound February 14, 2014 in Feasterville, Pennsylvania. (Photo by William Thomas Cain/Getty Images) ( 469364839 )

Rescue and fire personnel assist on the scene of a 100 car chain reaction pileup accident on the Pennsylvania Turnpike eastbound February 14, 2014 in Feasterville, Pennsylvania. (Photo by William Thomas Cain/Getty Images) ( 469364835 )

Victims await assistance from rescue and fire personnel on the scene of a 100 car chain reaction pileup accident on the Pennsylvania Turnpike eastbound February 14, 2014 in Feasterville, Pennsylvania. (Photo by William Thomas Cain/Getty Images) ( 469364845 )

Rescue and fire personnel assist on the scene of a 100 car chain reaction pileup accident on the Pennsylvania Turnpike eastbound February 14, 2014 in Feasterville, Pennsylvania. (Photo by William Thomas Cain/Getty Images) ( 469364843 )

Rescue and fire personnel assist on the scene of a 100 car chain reaction pileup accident on the Pennsylvania Turnpike eastbound February 14, 2014 in Feasterville, Pennsylvania. (Photo by William Thomas Cain/Getty Images) ( 469364855 )

Rescue and fire personnel assist on the scene of a 100 car chain reaction pileup accident on the Pennsylvania Turnpike eastbound February 14, 2014 in Feasterville, Pennsylvania. I(Photo by William Thomas Cain/Getty Images) ( 469364867 )

Vehicles are piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( Turnpike Crash )

Vehicles are piled up in an accident Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( Turnpike Crash )

Vehicles are piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( Turnpike Crash )

Firefighters check in on motorist in vehicles are piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( Turnpike Crash )

Vehicles are piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( Turnpike Crash )

This video frame grab provided by Fox 29 Philadelphia shows traffic accidents involving multiple tractor trailers and dozens of cars on Pennsylvania Turnpike outside Philadelphia, on Friday, Feb. 14, 2014. The crashes were reported just after 8 a.m. Friday, one day after the area got about a foot of snow that left roads slick. Television news helicopter footage showed several tractor-trailers and dozens of cars involved in a series of accidents that had backed up traffic for miles between the Bensalem and Willow Grove exits. (AP Photo/Fox 29 Philadelphia) ( Turnpike Crash )

A man gets out of a SUV, one of many vehicles piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( Turnpike Crash )

Jerry Troy squeezes out of his vehicles that is piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( Turnpike Crash )

A man inspects vehicles piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( Turnpike Crash )

Vehicles are piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( Turnpike Crash )

Pennsylvania State Police trooper inspects vehicles piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( Turnpike Crash )

A huge pileup, seen in an aerial photo, shut down part of the Pennsylvania Turnpike in Bensalem, Pa., on Friday, Feb. 14, 2014. An estimated 50 to 100 vehicles were involved after crashes on the slushy roadway. (AP Photo/Philadelphia Inquirer, Michael S. Wirtz) ( Turnpike Crash PA )

A man inspects vehicles piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( Turnpike Crash )

Workers remove vehicles piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( Turnpike Crash )

Vehicles are piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. Traffic accidents involving multiple tractor trailers and dozens of cars have completely blocked one side of the Pennsylvania Turnpike outside Philadelphia and caused some injuries. (AP Photo/Matt Rourke) ( Turnpike Crash )

A huge pileup, seen in an aerial photo, shut down part of the Pennsylvania Turnpike in Bensalem, Pa., on Friday, Feb. 14, 2014. An estimated 50 to 100 vehicles were involved after crashes on the slushy roadway. (AP Photo/Philadelphia Inquirer, Michael S. Wirtz) ( Turnpike Crash PA )

A father and son pass the time as while they are stuck in traffic near where vehicles are piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. (AP Photo/Matt Rourke) ( Turnpike Crash )

Emergency responders work to clean up a huge pile up after an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. (AP Photo/Bucks County Courier Times, Bill Fraser ) ( Turnpike Crash )

A huge pileup, seen in an aerial photo, shut down part of the Pennsylvania Turnpike in Bensalem, Pa., on Friday, Feb. 14, 2014. An estimated 50 to 100 vehicles were involved after crashes on the slushy roadway. (AP Photo/Philadelphia Inquirer, Michael S. Wirtz) ( Turnpike Crash PA )

A man inspects vehicles piled up in an accident, Friday, Feb. 14, 2014, in Bensalem, Pa. (AP Photo/Matt Rourke) ( Turnpike Crash )