Officials at the Port Authority of New York and New Jersey, which runs the airport, say they hope not to repeat the debacle of last Monday, when Twitter was flooded with images of bedraggled travelers hauling children and suitcases along the Grand Central Parkway because private cars and taxis couldn't get anywhere near the departures area to drop them off. The redevelopment of the airport that serves 28 million passengers a year started this summer with the demolition of a parking garage where a new main terminal will be built and the realignment of roads to make way for a new parking garage. Going forward, Smyth said the authority hopes to alleviate traffic congestion through measures like promoting bus service to LaGuardia and encouraging passengers to use a remote drop-off lot with shuttle service to the departure area. Sitt said the Port Authority must keep travelers informed about buses to LaGuardia and parking options if they choose to drive, preferably with an app that would provide real-time traffic data. A Port Authority spokeswoman said the airport's website is updated regularly and alerts about flight and traffic delays are sent via social media.