Heh, they don't pull you over, they read your plate & mail you the ticket.
It is enforced heavily, just in random patterns. 2 of my family members work in NJ and both require phones that can do hands free operation, speakerphone at the very least.
One of my friends had an employee going over the washington crossing bridge into NJ, and he was scrambling for his BT headset (hand on wheel eyes on road slowing down actually), but NJ state trooper was parked right at the gas station across the way there, sure enough he got a ticket in the mail 3 weeks later Not sure how much it was for tho.
Also, i've noticed that cops are going after tailgaters on the major highways. This ain't a race track, no drafting!
LETS GO METS!