While I was a driver with fedex ground on my daily...

While I was a driver with fedex ground on my daily route, I witnessed multiple occasion's of the delivery truck running stop signs, speeding to beat red lights, brake checking, bad following distance, talking on a cell phone and looking through paperwork while driving. I tried to let the driver know respectfully to obey d.o.t. laws but was confronted with vulgar language and a few less then desirable hand gestures. Completely unprofessional and a bad representation of the company