Zohran MamdaniMike FlynnJessica TischNew York City Department of TransportationUnited Nations

NYC under Gridlock Alert Days during U.N. General Assembly; Midtown traffic slows to less than four miles per hour

New York City is under Gridlock Alert Days during the U.N. General Assembly, with Midtown traffic slowing to less than four miles per hour. The alert, effective Monday through Friday, anticipates extensive street closures and delays as thousands of world leaders gather in the city.

cbsnews.com cbsnews.com21 September 2026 · 12:46 UTC
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New York City is experiencing Gridlock Alert Days as the U.N. General Assembly convenes, with traffic in Midtown expected to slow to less than four miles per hour. The city's Department of Transportation has issued the alert from Monday through Friday, anticipating extensive street closures and delays due to the influx of thousands of world leaders.12

Historically, average motor vehicle speeds in Midtown during this week are at their slowest, with a significant drop from the usual four to six miles per hour. Transportation officials recommend alternative travel methods, including bike lane tunnels, regional rail lines, the subway, bus systems, ferries, and walking to navigate around the congested areas near the United Nations headquarters.34

The alert is expected to remain in effect until next Saturday, with numerous street closures already in place. Drivers are advised to plan ahead and expect delays as the city accommodates the high-profile attendees of the assembly.

Key Insight
“NYC DOT data shows Midtown motor vehicle speeds during U.N. General Assembly week are historically the slowest of the year, dropping below four miles per hour versus the normal four to six. Transportation officials urge using the bike lane tunnel, regional rail, subway, bus, ferries, and walking to bypass congestion around United Nations headquarters.”
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“New York City is under several during the in Midtown Manhattan.”
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