City Councilwoman Helen Rosenthal has given bike safety priority in her budget.
Principals and parents say that the current street design creates a traffic nightmare at two schools.
The street is home to the three most collision-prone intersections in the neighborhood.
The speed camera was installed last summer near two schools.
The DOT plans to lower the speed limit on several streets between Astoria Boulevard and 30th Avenue.
The city hopes to reduce crashes at the busy Prospect-Lefferts Gardens intersection.
New rules at the Court Square garage force drivers to wait for hours for monthly parking permits.
The board is worried new Citi Bike riders will get hurt without a northbound protected bike lane.
Two local residents behind the Stryker Park push discussed their vision and opposition from others.
The DOT added a light and pedestrian signals at 51st Street and Skillman Avenue last week.
The improvements are the first phase of redesign plans for the roadway, nicknamed "Boulevard of Death."
One lane of Brooklyn traffic will be removed to make room for a bike path on the bridge, the DOT said.
The Plaza de Las Americas at 175th Street and Broadway will be transformed into a town square.
Transportation advocates have pushed for safety upgrades on 21st Street for the last few years.
The city is looking to install bike lanes on the bridge in the late spring, the DOT said.
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