New York City’s first “Car Free Day,” the brainchild of City Council Transportation Chair Ydanis Rodriguez, is underway.

On the streets, there are three car-free zones in Manhattan in effect from 10 a.m. to 2 p.m.: blocks abutting Washington Square Park, Wadsworth Avenue between 173rd and 177th Streets, and Broadway from Union Square to Madison Square.

While the initiative is much more modest than events like Bogota’s, where the annual car-free day removes an estimated 600,000 private vehicles from the streets, or Paris’s, where last year the mayor made a third of the city off-limits to cars for a day, Rodriguez has said he hopes the event can build momentum for his efforts on the council to increase the share of car-free households in NYC.

Speaking near Madison Square this morning alongside DOT Commissioner Polly Trottenberg, Rodriguez emphasized that cutting traffic is necessary to prevent catastrophic climate change. “For me this is not about a politician trying to do something that people will like to hear, this is for my daughters,” Rodriguez said. “By reducing cars, by reducing emissions… we can make a major contribution.”

Rodriguez has pulled together a coalition of more than 35 organizations and companies to participate in the initiative, encouraging employees and members to go car-free for the day.

In introducing Rodriguez, Trottenberg promoted the de Blasio’s administration’s policies to reduce New York City’s carbon footprint, and tied those efforts to her work at DOT to increase biking and reclaim street space for pedestrians. “As we’re focused on making the city greener — we’re focused on alternative modes of transportation — we’re also making the city safer,” Trottenberg said, referring to DOT’s Vision Zero program.

Trottenberg lauded Rodriguez for his efforts on the council. “I’m really proud, Mr. Chairman, of our partnership,” she said. “You really have been a force of nature on [Car Free Day].”

Mayor de Blasio himself was absent, however, and there was no new policy announcement to accompany the day’s events — no new budgetary commitment to bus lanes or bike lanes, no expansion of on-street parking reform to cut traffic, no concrete steps that will reduce driving beyond the city’s existing efforts.