But some traffic deaths don't disappear. They echo for decades.

Consider the story of Darren J. Mayer, a seven-year-old boy from the Outer Sunset who was struck and killed by a Muni bus while riding his bike in Golden Gate Park sometime in the mid-1980s. Darren was hard of hearing, the result of childhood earaches. He was riding near his sister and grandfather when a city bus driver hit him. He died in front of his family.

What happened next is a story the city apparently has no interest in remembering. Darren's surviving sibling — born two years after the tragedy — has spent years trying to piece together what followed. Was there a court case? Did Muni settle, or deny the claim? The family members who lived through it have since passed away, and the public record, if it exists, has proven elusive. Even the bus driver, who reportedly became suicidal after the incident, remains a ghost in the city's institutional memory.

"I hope that driver was able to find peace," the sibling wrote in a public plea for information. That sentence alone should gut you.

Here's what bothers us: San Francisco talks constantly about Vision Zero — the city's pledge, launched in 2014, to eliminate traffic deaths. A decade later, pedestrian fatalities remain stubbornly high. The Chinatown crash is the latest proof. But the Mayer case reveals something worse than failure — it reveals institutional amnesia. When a city-operated vehicle kills a child and the family can't even find out what happened in court, that's not just a bureaucratic gap. That's a system that doesn't think it owes anyone an answer.

Government accountability isn't just about budgets and audits. Sometimes it's about a family that deserves a file, a record, a simple acknowledgment that their seven-year-old mattered enough to remember.

If anyone has information about the Darren J. Mayer case, we'd like to hear from you.