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An accident involving a tractor trailer snarled traffic on the Parkway West on Tuesday. Knuckle Boom Truck
![Tractor-trailer accident on Parkway West](http://cdn.globalso.com/hwtrailercrane/production-flow-char.png)
Dispatchers confirm the accident happened around 10:20 a.m. near the Campbell's Run Road exit. A statement from PennDOT said that the crash has been cleared and that all lanes had reopened to traffic.
Images show the tractor-trailer blocked the right lane on the outbound side of the highway, with traffic slowly getting by in the left lane.
The Moon Run Volunteer Fire Company said the truck's driver was not injured. There is no word on what caused the crash.
![Tractor-trailer accident on Parkway West](http://cdn.globalso.com/hwtrailercrane/SSH9340TJZ-Container-transport-semi-trailer-1.jpg)
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