A child is dead in Mission Bay, and if you're waiting for the city to have a come-to-Jesus moment about traffic safety, you might be waiting a while.

Mission Bay has exploded over the past decade — new housing towers, a UCSF campus, Chase Center, thousands of new residents — and the infrastructure hasn't kept pace. Wide arterial streets designed to move cars fast sit right alongside playgrounds, schools, and crosswalks that families use every single day. That's not an accident waiting to happen. That's an accident that was always going to happen.

Now it has.

San Francisco spends enormous energy debating bike lane configurations on Valencia Street and crafting 47-page Vision Zero reports that apparently nobody reads. Meanwhile, in one of the fastest-growing neighborhoods in the city, a child didn't make it home.

Vision Zero — the city's stated goal of eliminating traffic fatalities — was adopted back in 2014. We're a decade in and children are still dying on city streets. At some point, a policy with a body count stops being a policy and starts being a press release.

What Mission Bay needs isn't another task force. It needs immediate, physical changes: raised crosswalks, reduced speed limits with actual enforcement, protected pedestrian signals, and traffic calming on the corridors where people — especially kids — are trying to simply get from point A to point B alive.

The city has the tools. It has the budget. What it has consistently lacked is urgency.

This is the moment to find some.