The City Council's Transportation Committee will questions DOT Commissioner Mike Flynn at a hearing right after the rally at 10 a.m.
The city is falling short on bus and bike lanes requirements from the 2019 Streets Master Plan.
Transportation Committee Chair Shaun Abreu called the hearing to "look beneath the hood" of the agency's actions during the Adams administration, and ask Flynn whether they can "make up for lost time."
Under the now expired Streets Master Plan, passed in 2019 while former Mayor de Blasio was in office, the city was required to build 150 miles of new protected bus lanes and 250 miles of new protected bike lanes over five years.
But under the Adams administration only built about 28 miles of bus lanes and 95 miles of protected bike lanes.
Bus and bike lane projects were either paused or killed during the Adams administration. Mamdani has since revived plans to build bus lanes on both Fordham Road in the Bronx and McGuinness Boulevard in Brooklyn.
Lawmakers will also discuss Brooklyn Council Member Lincoln Restler's bill to revamp the city's outdoor dining program, making it year-round once again, after most restaurants declined to participate in seasonal roadway dining.
City Council Speaker Julie Menin supports Restler's bill.
Advocates see Tuesday morning's hearing as a way to reset expectations after failing to meet the plan's now-expired mandates under the previous administration.
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