New York is a busy city, especially during this time of the year. Luckily, however, the city has identified what it calls Gridlock Alert Days. To travel smoothly, the city advises New Yorkers to use mass transit on the following days:
Friday, Dec. 10
Wednesday, Dec. 15
Thursday, Dec. 16
Friday, Dec. 17
Wednesday, Dec. 22
Thursday, Dec. 23
