Pittsburgh, Pennsylvania Roadblocks

A police car will be sitting up where the company has all of the flags out and will radio the police cars at crane when the spot a car speeding .so dont speed ,that gives them a reason to pull you over .

In the Pittsburgh area, nearly 4,000 cars were stopped at DUI checkpoints at the following locations:

Rt. 65 and Marshall Avenue, North Side, Pittsburgh (city police; West Hills and North Hills DUI task forces; state police, Pittsburgh barracks)
Route 19, Pine and Marshall townships (North Hills DUI Task Force)
Route 51, Jefferson Hills (South Hills DUI Task Force)
Route 50, South Fayette (Mount Lebanon DUI Task Force)
Old Route 28, East Deer Township (Allegheny Valley DUI Task Force)
Route 18/North Hermitage Road, Mercer County Route 8, Penn Township, Butler County Route 422 and Parkwood Road, Indiana County.

Both lanes were shut down obviously, They had six or more police vehicles at the scene and multiple people arrested.

You can usually see the flashing lights to get your act together or take an alternate route.