NEW YORK (AP) _ First it was unruly drivers. Now it's slovenly subway riders.

Fed up with untidy subways, Mayor Rudolph Giuliani wants cops to ticket underground litterbugs and passengers who sip coffee on the train.

Giuliani's trash offensive comes a day after he promised a crackdown on drivers who block intersections or double park. He recommended the trash blitz during a staff meeting, Transit Authority board member John Dyson said.

Riders caught dropping gum wrappers, spent fare cards, cigarette butts and other litter will be slapped with a $50 ticket. Those with open beverage containers _ technically illegal but ubiquitous in the subway _ risk a $25 fine.

``Nothing straightens people out like handing out a few tickets,'' said Dyson, who is one of Giuliani's representatives on the board.

The outspoken Giuliani, a second-term Republican, has launched a number of efforts to civilize New Yorkers, jousting with taxi drivers, jaywalkers, sidewalk vendors and others.