Polly Trottenberg

Ask a Greenpoint resident to name the neighborhood's most dangerous street, and they'll likely point to McGuinness Boulevard, an infamous speedway that splits the neighborhood in half. Today, it became the city's third "arterial slow zone" to receive a 25 mph speed limit, retimed traffic signals to discourage speeding, and focused enforcement.

Local elected officials and advocates joined NYC DOT and NYPD this morning to unveil the city's second "arterial slow zone" on the Grand Concourse in the Bronx, where speed limits will be dropped to 25 mph and traffic signals will be retimed to discourage speeding.

Since being turned on in mid-January, New York City's limited speed camera program -- five cameras near schools, turned on only during weekday school hours -- have caught 14,500 drivers hitting at least 40 mph as of Tuesday, according to DOT. After 15 more cameras come online later this spring, the city will have reached its state-imposed cap on cameras. To bring speeding under control on most of the city's 6,000 miles of streets, though, it's up to Albany to let NYC run a much more substantial automated enforcement program.

As drivers zoomed by on Atlantic Avenue this morning, local elected officials and advocates joined NYC DOT and NYPD to unveil the first of the city's "arterial slow zones," major streets where the speed limit will be dropped to 25 mph from the current citywide limit of 30 mph. Traffic signals will also be retimed to a 25 mph progression, to help keep motorists' speeds in check.

Minutes after Council Member Laurie Cumbo and street safety advocates called for immediate action to reduce traffic violence on Atlantic Avenue, Transportation Commissioner Polly Trottenberg told the audience at a Vision Zero forum in Crown Heights last night that DOT intends to make Atlantic one of its early priorities for safety fixes.

The Vision Zero town hall roadshow returned to Manhattan last night with a well-attended forum at John Jay College. Elected officials, agency representatives and the public gathered to discuss the city's plan to eliminate traffic fatalities and to offer suggestions for the initiative. Like last week's forum in Astoria, some new details came out over the course of the evening about the city's next steps for Vision Zero -- including hints from NYPD about opening more data to the public. Another highlight: Livery drivers offered their own suggestions to stop the carnage on city streets.

Last night, more than 100 people gathered in Astoria for the latest in a series of Vision Zero town halls bringing together residents,  city officials, elected representatives, and advocates to talk about street safety. New information regarding City Hall's current thinking about the safety of trucks and large vehicle fleets came to light, and officials also hinted at opening more street safety data to the public.

City Council members today expressed strong support for Vision Zero, bike-share expansion, and other safe streets initiatives, but it's not clear how they will be funded.

A marathon City Council hearing elicited some new details about Mayor Bill de Blasio's Vision Zero agenda and brought out the raw emotion of New Yorkers mourning loved ones killed on city streets.