Messy travel appears to be the order of the day as a major winter storm in the East slowly plays itself out.
At least 21 people have died, most in traffic accidents, and thousands of airline flights have been scrapped.
Hundreds of thousands of customers from the South through the Northeast, are without electricity.
Authorities say more than a dozen people were injured in traffic accidents involving several tractor-trailers and dozens of cars on the Pennsylvania Turnpike outside Philadelphia.
Abington Memorial Hospital spokeswoman Cindy Taing says the hospital received 16 patients: five trauma patients and 11 people with minor injuries. She said she can't immediately provide conditions for the trauma patients.
The series of accidents backed up traffic for miles between the Bensalem and Willow Grove exits of the turnpike, the state's primary east-west highway.
The crashes were reported just after 8 a.m., about five hours after a storm that dropped a foot of snow finally moved out. Speed restrictions enacted during the storm had been lifted at 6 a.m., but motorists say the roadway was very slick.