Well, off the top of my head, and I'm not too familiar with New York state laws so bear with me:
-Illegal use of emergency lights (only emergency vehicles like police and fire can have blue or red lights on their vehicles). Getting Slimer out of the Sedgewick probably isn't a matter of life or death.
-Speeding
-Ignoring traffic signs and lights
-Illegal operation of a vehicle containing nuclear and hazardous materials without a proper license or vehicle.
-wreckless endangerment
-Disturbing the peace (sirens again are only for emergency vehicles)
Knowing the Ghostbusters, I'm probably missing one or two or a hundred violations.
They're looking at a couple of years….before their first parole hearing.