NEW YORK — Three cyclists were killed by hit-and-run drivers in New York City over a three-day span last week, a series of deaths that has renewed scrutiny of the city’s street-safety strategy and prompted advocates to call for a public demonstration at City Hall this week.

The victims were 29-year-old Paulina Tec Choc, 51-year-old Angelo Camara and 40-year-old Mamadou Diallo. Each was struck while riding in Brooklyn or the Bronx between Tuesday and Thursday, according to police accounts reported by local news organizations. As of the latest reports, the drivers involved in the three crashes had not been apprehended.

Transportation Alternatives, the New York street-safety organization, has scheduled a “die-in” for Wednesday at 5:30 p.m. in City Hall Park. The group said the demonstration is intended to press Mayor Zohran Mamdani’s administration for a broader plan to reduce traffic deaths and improve protections for people traveling by bicycle.

The deaths occurred during a particularly deadly stretch for cyclists.

Tec Choc, a Queens resident, was riding in the Cypress Hills section of Brooklyn early Tuesday when a pickup truck struck her from behind near Jamaica Avenue and Cypress Hills Street, according to police. The driver continued from the scene.

Later that day, Camara was riding home from work in the Bronx when police said a BMW traveling east on Bruckner Boulevard ran a red light at Lockwood Avenue and struck him. The vehicle then hit parked cars and another vehicle before the driver fled. Camara, a mechanic and father of five, was taken to a hospital, where he died.

The third fatal crash came late Thursday in Flatlands, Brooklyn. Diallo, a Canarsie resident, was attempting to turn near Avenue I and East 54th Street when a BMW struck him, police said. He was thrown from his bicycle into a parked vehicle and later died at Brookdale Hospital. The driver left the scene.

The sequence has become a fresh test for Vision Zero, New York City’s long-running effort to eliminate traffic deaths and serious injuries.

The city has made substantial changes to its streets since Vision Zero began more than a decade ago, including expanding protected bike lanes, redesigning intersections and reducing speed limits. Yet traffic deaths have proven difficult to eliminate, and cyclist fatalities remain a particular concern.

Transportation Alternatives said 99 people were killed in traffic crashes during the first six months of 2026. The organization reported that cyclist deaths during that period were 86 percent higher than during the same period a year earlier.

Official traffic-fatality data is maintained by the New York Police Department and updated weekly across the five boroughs.

The fact that all three of last week’s deaths involved drivers who allegedly fled has added another layer of concern. Hit-and-run crashes can complicate investigations and delay accountability while police search for drivers and vehicles.

For advocates, however, the broader issue is not limited to enforcement after a crash.

Transportation Alternatives is calling for what it describes as an all-of-government response, arguing that street design, traffic enforcement, vehicle speeds and transportation policy must work together if the city is to reduce fatalities substantially.

Ben Furnas, the group’s executive director, said after the three deaths that New Yorkers should be able to ride bicycles without facing preventable danger. The organization’s planned demonstration will use the “die-in” format, with participants lying on the ground to represent people killed in traffic crashes.

The protest also recalls an earlier period of alarm over cyclist deaths.

In 2019, advocates staged a large die-in in Washington Square Park after cyclist fatalities rose sharply. Twenty-nine cyclists were killed that year, according to Streetsblog. The publication reported Monday that the current pace of deaths could approach that total if the trend continues through the end of 2026.

Since then, bicycling has become an even more significant part of New York’s transportation system.

Citi Bike has expanded across large sections of Manhattan, Brooklyn, Queens and the Bronx, while electric bicycles have become central to the city’s delivery economy. At the same time, debates over protected lanes, intersection design, e-bike regulation and traffic enforcement have become increasingly prominent in city politics.

The latest fatalities put those debates back into immediate focus.

Camara’s family described him as a mechanic, father and community figure who regularly traveled by bicycle. Tec Choc was reportedly riding to work when she was struck. Diallo was killed less than three days after the first two crashes.

The investigations remain separate, but the proximity of the deaths has turned them into a broader political and public-safety issue.

Wednesday’s demonstration will bring that pressure directly to City Hall, where advocates are expected to call for faster implementation of safety projects and a clearer strategy for reducing cyclist fatalities.

For New York, the question is no longer simply whether more people will travel by bicycle. That trend is already well established.

The more difficult question is whether the city can make that growth compatible with a transportation system in which a routine ride to work or home does not carry an unacceptable risk of becoming fatal.