In a tragedy that has shaken Chicago’s transportation community, the Bridgeport bicyclist killed in a crash on Friday was a city employee who had spent much of his career trying to make streets safer for people on bikes. Riley O’Neil, a Chicago Department of Transportation planner and project manager, died while riding on Halsted Street — a loss made all the more painful by the very work he dedicated his life to.

The circumstances of his death, and the safety failures advocates say it exposes, have turned personal grief into a broader call for action.

How the Crash Happened

The collision that killed O’Neil unfolded in a sequence that bike safety advocates say was entirely preventable.

According to a police source and a witness who spoke to the Tribune, the driver of a white sedan opened the car’s door directly into O’Neil’s path as he rode by. O’Neil swerved to avoid it but still struck the door and was thrown into the street. There, the driver of a large truck ran him over.

He was taken to Stroger Hospital, where he was pronounced dead. He was 35 years old.

The Citations Issued at the Scene

Chicago police responded by issuing several citations to a 31-year-old man at the scene.

The four citations included:

• Unsafe opening or closing of a vehicle door
• Prohibited parking
• Driving on a suspended license
• Operating an uninsured vehicle

On Saturday, the Cook County medical examiner’s office ruled O’Neil’s death an accident, attributing it to multiple injuries from the collision with a semi-truck. As of early Saturday afternoon, police had not made any arrests, declined to name the cited individual, and said detectives were still investigating.

A Life Devoted to Safer Streets

What makes O’Neil’s death so striking is how deeply his career was tied to preventing exactly this kind of tragedy.

Those who knew him described a devoted public servant who loved biking and cared passionately about improving Chicago’s infrastructure. Joseph Schwieterman of DePaul’s Chaddick Institute for Metropolitan Development said O’Neil had devoted his life to making cycling better and safer.

His commitment showed up in ways large and small. O’Neil attended graduate school at DePaul and later served as a post-graduate fellow at the Chaddick Institute. Schwieterman recalled a trip the institute took to Milwaukee about a decade ago — while everyone else rode Amtrak to Wisconsin, O’Neil made the journey on his bike.

Schwieterman found it disheartening that society often seems to accept bicycle deaths as an unavoidable part of life.

His Work at CDOT

Within the city, O’Neil’s contributions touched some of Chicago’s most important safety initiatives.

He worked as what a department spokesperson called a “cherished member” of CDOT’s Complete Streets team. Complete Streets is a city program focused on making Chicago’s roads safer, especially for cyclists and pedestrians, through projects like protected bike lanes and other infrastructure improvements. Before joining that team, O’Neil led the city’s bike parking program.

His colleagues remembered him with deep affection. CDOT assistant commissioner David Powe described him as the most passionate and caring colleague he’d ever had, writing that O’Neil’s love for biking, transit, and infrastructure was contagious and that he could connect with anyone and get them excited about making Chicago better for biking, walking, and rolling.

In a touching tribute, Powe called for Chicagoans to refer to bike racks as “Riley Racks” in O’Neil’s memory, saying that while hearts were broken, the goal was to keep his legacy alive.

A Department in Mourning

The loss has rippled across city government.

CDOT spokesperson Erica Schroeder said the department was deeply saddened by the loss of its beloved colleague, extending condolences to his family and friends. She described O’Neil as a dedicated public servant who devoted his career to making Chicago’s streets safer and more accessible for everyone, adding that his absence is being felt deeply across the department.

Mayor Brandon Johnson also issued a statement, calling O’Neil a valued colleague and dedicated advocate whose work touched communities across Chicago. The mayor said his death is felt across city government and that Chicago is grateful for his service.

Advocates Call It Preventable

For bicycle safety advocates, O’Neil’s death was more than a tragedy — it was an indictment of policy choices.

Christina Whitehouse, founder of the advocacy group Bike Lane Uprising, described O’Neil as someone who genuinely cared and called his death a “poetic injustice.” She argued that preventing deaths like his requires both better infrastructure and better education for drivers.

A key detail fueling their frustration is the type of bike lane near the crash site. The lanes in that area are painted, not protected by a physical barrier. Advocates have long criticized unprotected lanes, arguing they do too little to shield cyclists from drivers.

Kyle Lucas of the advocacy group Better Streets Chicago put it bluntly, saying O’Neil’s death was preventable and a painful reminder that such tragedies stem from policy choices and political will. He insisted the crash wouldn’t have happened in a protected bike lane and accused elected officials of prioritizing parking over safety.

The Politics of Bike Lanes

The debate over protected lanes is far from simple in Chicago.

Some efforts to build more protected bike lanes have run into organized pushback from residents worried about losing parking spots and making driving less convenient. That tension — between safety improvements and the demands of car users — sits at the center of the policy fight advocates say cost O’Neil his life.

The Bigger Picture on Chicago Traffic Deaths

O’Neil’s death also lands amid mixed data on the city’s road safety record.

Through April of this year, 10 pedestrians and four bicyclists or motorized scooter users had died in Chicago traffic crashes, according to CDOT data. Notably, no bike or e-scooter deaths had been reported during the same period in 2025, while pedestrian deaths held steady year over year.

At the same time, the department maintains that its broader efforts are working. CDOT assistant commissioner David Smith recently told the Tribune that traffic fatalities have dropped roughly 35% since 2019, even as the number of cyclists in the city has surged.

A Legacy That Lives On

Riley O’Neil’s death leaves behind a community grappling with grief and a renewed urgency around the cause he championed.

The bitter irony is impossible to ignore: a man who spent his career fighting to protect cyclists died in a crash that advocates believe better infrastructure could have prevented. His colleagues and the advocacy community are determined that his work won’t be forgotten — whether through the “Riley Racks” his friends hope to name in his honor or through the safer streets he spent his life trying to build.

For now, the investigation continues, and Chicago is left to weigh the questions O’Neil’s death raises about how the city protects the people who travel its streets on two wheels.