DIX HILLS, N.Y. — Metropolitan Transportation Authority Chairman Joe Lhota says he’s concerned about how prolonged freezing temperatures will affect the Long Island Rail Road.

Lhota noted at a briefing Thursday that the LIRR is “completely exposed to the elements.” He says the railroad is doing everything it can to keep its tracks warm.

About a third of the LIRR’s daily riders stayed home. Some service was added for people leaving work early.

Suffolk County Executive Steve Bellone says the snowstorm has resulted in dozens of accidents and stranded drivers — even though people are supposed to stay off the roads.

Gov. Andrew Cuomo there’ve been wind gusts up to 60 mph, and several thousand electrical outages.