WOODBURY - A 24-year-old East Northport man pleaded not guilty to charges that he slammed a car into numerous vehicles and tried to run down an officer while driving high before being stopped on the Northern State Parkway yesterday.

Authorities say Gregory Schwert hit about a dozen cars on Old Country Road in Hicksville and on the Wantagh and Northern State parkways.

Schwert is charged with assault, reckless endangerment and possessing hypodermic needles.

No one was seriously injured in the crashes.