The 81st United Nations General Assembly is bringing one of New York City’s largest annual security operations to Manhattan, with thousands of police officers, federal agents, diplomatic security personnel, motorcades and temporary transportation restrictions expected across Midtown and the East Side.
The high-level General Debate begins September 22 and runs through September 28, according to the NYPD’s September 17 security briefing. Delegations begin arriving in large numbers on September 20.
Key Facts
New York City officials said on September 17 that there were no known specific or credible threats against the United Nations General Assembly or New York City at that time.
Nevertheless, authorities are operating with an elevated security posture because representatives from nearly 200 countries are expected in New York.
Thousands of uniformed NYPD officers will be deployed around the United Nations complex, supported by counterterrorism officers, aviation and harbor units, K-9 teams, the bomb squad, drone teams and other specialized units.
Major Street Closures Around the United Nations
- First Avenue will be closed from 41st Street to 48th Street.
- East 44th through East 47th Streets will be closed between First and Second avenues.
- East 42nd Street will be closed between First and Second avenues while meetings are in session.
- The East 42nd Street exit from the FDR Drive will be blocked.
Rolling closures will occur elsewhere as diplomatic motorcades move through the city.
NYC Declares Five Gridlock Alert Days
NYC DOT designated September 21 through September 25 as Gridlock Alert Days.
DOT says Midtown traffic speeds during UN General Assembly week are historically among the slowest of the year.
Hundreds of Diplomatic Motorcades
NYPD Commissioner Jessica Tisch said officers will secure hundreds of diplomatic motorcades during the week.
Delays may extend well beyond First Avenue as officials travel between the United Nations, hotels, meetings and diplomatic events.
Temporary Drone and Flight Restrictions
A temporary flight restriction will be in effect from September 20 through September 26 within a two-nautical-mile radius of the United Nations.
The restriction applies to unauthorized drones, and counter-drone teams will be deployed.
Security Involves More Than 20 Agencies
The United Nations General Assembly is designated a National Special Security Event.
The U.S. Secret Service is the lead federal agency coordinating the overall security plan.
- New York City Police Department
- U.S. State Department Diplomatic Security Service
- FBI
- U.N. Police
- FDNY
- NYC Emergency Management
- Port Authority Police
- U.S. Coast Guard
- TSA
- Federal Air Marshal Service
- FEMA
- Homeland Security Investigations
Demonstrations Expected
The NYPD expects multiple demonstrations during UNGA week and says lawful First Amendment activity will be accommodated while laws against violence and property destruction remain enforced.
What Midtown Residents and Businesses Should Expect
- temporary street closures;
- security checkpoints;
- diplomatic motorcades;
- heavy police presence;
- slower deliveries;
- possible FDR restrictions;
- ferry disruptions;
- protest-related street restrictions.
Bottom Line
The 2026 United Nations General Assembly will create one of the largest security and transportation operations of the year in New York City.
There was no known specific credible threat as of the September 17 official security briefing, but thousands of officers and federal agents are being deployed because of the scale of the event.
Official Sources
- NYC Mayor’s Office / NYPD — September 17, 2026 Security Briefing
- NYC Department of Transportation — 2026 Gridlock Alert Days
- NYC 311 — Gridlock Alert Days
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