Update: Sunday’s event has been postponed, according to a TA press release, “in solidarity with those protesting the grand jury decision not to indict in the Eric Garner case.”

The cab driver who killed 9-year-old Cooper Stock is scheduled to appear in court Friday. Koffi Komlani was issued two traffic tickets, but unlike most drivers who kill New York City pedestrians, his case will be adjudicated in criminal court, the venue preferred by Manhattan District Attorney Cy Vance.

The top “charge” against Komlani is careless driving, which carries a maximum penalty of up to 15 days in jail, a fine of up to $750, a license suspension of up to six months, and a mandatory drivers’ ed course. The minimum penalty is no penalty. As Jill Abramson wrote Wednesday: “It is unclear whether [Komlani] will be fined or otherwise punished. D.A. Vance wanted him to be forced to appear in court, in part to blunt criticism of his office for not bringing criminal charges in the case.”

Regardless of what happens tomorrow, on Sunday Transportation Alternatives and Families for Safe Streets will hold a rally on the steps of City Hall to call on city district attorneys to prosecute reckless drivers who cause death and serious injury. Along with NYPD and the New York State Department of Motor Vehicles, New York City district attorneys have emerged as a major obstacle to Mayor de Blasio’s Vision Zero initiative. A TA press release says victims and their loved ones want DAs “to become partners in the Vision Zero effort.”

“Why is it that if you kill someone while driving drunk, the district attorney will press charges, but not if you kill or maim someone through reckless behavior on the road,” said Amy Cohen, whose 12-year-old son Sammy Cohen Eckstein was killed by a motorist last year, in a press release. “Crashes caused by aggressive driving are not accidents. When drivers make turns at full speed without even looking, or speed through intersections and kill people, D.A.s never press charges. We need to change the culture on our streets and make it unacceptable to drive recklessly. We will never get to zero fatalities and serious injuries unless we hold dangerous drivers accountable for their actions.”

“District attorneys are the people’s prosecutors, and they must champion public safety,” said Paul Steely White, TA executive director. “The public needs more information about how D.A.s determine whether to prosecute after serious crashes, and how often they bring charges.”

White called for City Council oversight hearings and legislation to requiring DAs to report to the public on traffic crash prosecutions.

Richard Brown of Queens, Robert Johnson of the Bronx, and Dan Donovan of Staten Island are up for re-election in 2015. Transportation Alternatives “will press the issue of driver accountability with all the candidates,” White said.

Sunday’s rally begins at 2 p.m.