Nyc Gridlock Alert 2025. When are nyc’s gridlock alert days? The dot designates 15 days as gridlock alert days, when traffic across the city can come to a crawl.
Wednesday, thursday and friday are all gridlock alert days, according to the new york city department of transportation. On all holiday season gridlock alert days during the holiday construction embargo period lane closures are prohibited from 6:00 am to midnight on highways (and their service roads) and east and harlem river.
