Times Square on New Year's Eve? What to know

• 65 sand trucks and another 100 "blocker" vehicles will be positioned around Times Square
• The NYPD wants to prevent truck attacks like the ones that killed nearly 100 people in Europe this year
• Alcohol will be confiscated as well as large bags and umbrellas

Dozens of sand trucks and "blocker" vehicles will be positioned around Times Square on New Year’s Eve to prevent terrorist truck attacks like the ones that killed nearly 100 people in Europe this year, New York City officials said Thursday.

Authorities say 65 20-ton Department of Sanitation trucks, weighted with an extra 15 tons of sand and another 100 NYPD vehicles will team with 7,000 police officers to keep Times Square secure when an estimated 2 million people come to see the ball drop during the city's annual New Year’s Eve celebration.

“People will be safe this New Year’s Eve because we’re there along with our law enforcement partners,” New York Police Department Commissioner James O’Neill said at a Thursday press conference in Manhattan. “We’re going to have one of the most well-policed, best protected events at one of the safest events in the entire world.”

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The NYPD is not aware of any threats directed at the New Year’s Eve celebration, O’Neill added.

“At this time we have no direct concerns related to terrorism, to Times Square specifically or New Year’s Eve in general,” the commissioner said.

Eighty-six people were killed when a truck plowed its way through Bastille Day revelers in Nice in July. Another 12 were killed in a Christmas market truck attack in Berlin this month.

Those attending Saturday night’s celebration will be directed into 65 pens that hold 3,000 people each and stretch from Times Square to 59th Street. They will go through a series of metal and radiation detectors. Umbrellas and large bags are banned as well as alcohol.

“I’m not quite sure why a million people want to stand in the freezing cold for long, long periods of time but they do,” Mayor Bill de Blasio said. “And we’ll be ready for them.”

Metro-North will be running extra Manhattan-bound trains on its lines in the early afternoon and early evening. They will also run extra overnight trains for after the New Year's Eve celebrations are over.

Helicopters will monitor the scene from overhead. Explosive-detecting dogs will fan out across Times Square and throughout the city’s subways and undercover officers will monitor suspicious activity.

“They’ll be mixing in, blending in with the crowds here in Times Square,” said Carlos Gomez, the NYPD’s chief of department.

City officials recently completed a $55 million renovation of Times Square, which includes widened sidewalks and new benches.

As in past years, officials have removed trash bins and mailboxes, sealed manhole covers and done sweeps of parking garages and hotels in preparation for the New Year's Eve festivities.

Police in New York have used trucks as blocker vehicles before, though never on this scale. The sand-filled trucks were deployed in November at the Thanksgiving Day parade and on Election Day, when they were posted outside Donald Trump’s Trump Tower, at two Manhattan hotels and at a convention center used by Hillary Clinton’s campaign.

Investigators also are reviewing the records of truck rental companies, said James Waters, chief of the NYPD’s counterterrorism bureau.

Officers will also provide security at a fireworks celebration in Coney Island and a midnight road race in Central Park.

O’Neill said NYPD officers trained for large-scale events like New Year’s Eve throughout the year and will be ready.

“It’s New York City police officers,” O’Neill said. “This is something that we do every day...This is where everybody has got to be on their toes. I know complacency can set in at times but certainly not at an event like this. Everybody knows how important this is.”

O’Neill noted there are few guarantees, however, when it comes to preventing a terror attack.

“Can we ensure that nothing will ever happen?” O’Neill said. “It’s an open city. It’s an open society…If you’re coming down to Times Square, rest assured that it will be a safe venue.”

It is not clear if president-elect Donald Trump will make an appearance, O'Neill said.

"I don’t think he’s coming but that might change I guess," O'Neill said.

The large trucks aren’t the only offering from the Department of Sanitation, said Kathryn Garcia, the sanitation commissioner. About 280 employees will be on hand to clean up between 40 and 50 tons of debris after the ball drops following the 60-second countdown to 2017, she said.

One final note for those planning to head to the city by train: Alcohol is banned on all Metro-North trains and platforms from noon Saturday until noon Sunday.

The Associated Press contributed to this report.