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California signs law raising penalties for sideshow participation

California signs law raising penalties for sideshow participation

Rule Changes San Francisco, CA local

New state law backed by San Francisco mayor targets repeat offenders and closes enforcement gaps

Today: Newsom signs AB 1588 into law

Overview

Updated 2 hours ago

California Governor Gavin Newsom signed a law on September 21 that raises penalties for participating in sideshows, the illegal street stunt events that have disrupted Bay Area intersections for years. The law, Assembly Bill 1588, was authored by San Francisco Assemblymember Catherine Stefani and sponsored by Mayor Daniel Lurie.

The law adds dirt bikes and motorbikes to the sideshow framework, aligns penalties with street racing, and makes serious bodily injury from a sideshow eligible for felony charges. Vehicles used in sideshows can be impounded for an additional 30 days upon conviction. The measure takes effect January 1, 2027.

Why it matters

If the law works, repeat sideshow participants face felony charges and longer impoundments, which could deter the stunts that have killed bystanders across California.

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Key Indicators

30 days
Additional vehicle impoundment
Vehicles used in sideshows can be impounded for 30 additional days upon conviction
Felony
Serious injury offense
Serious bodily injury caused by a sideshow driver is now eligible for felony charges
Dirt bikes
Newly covered vehicles
The law adds dirt bikes and motorbikes to the sideshow framework

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People Involved

Organizations Involved

Timeline

December 2025 September 2026

3 events Latest: Today
  1. Newsom signs AB 1588 into law

    Today Legislation

    Governor Gavin Newsom signs AB 1588, raising penalties for sideshow participation and closing enforcement gaps.

  2. Stefani introduces AB 1588

    Legislation

    Assemblymember Catherine Stefani introduces AB 1588 to raise penalties for sideshow participation statewide.

  3. Lurie signs SF city law increasing sideshow fines

    Local legislation

    San Francisco Mayor Daniel Lurie signs a city law increasing fines for misdemeanor sideshow offenses from $500 to $1,000.

Scenarios

1

Sideshow arrests rise sharply as new law takes effect

Likely Resolves by Q2 2027

Discussed by: Law enforcement agencies and traffic safety advocates

The law takes effect January 1, 2027. Police departments across California use the new tools to arrest and impound vehicles involved in sideshows. Repeat offenders face felony charges for causing serious injury. Early data shows a measurable increase in enforcement.

2

Court blocks key provision of sideshow law

Unlikely Resolves by End of 2027

Discussed by: Civil liberties groups and legal analysts

A legal challenge argues that the law's provisions are unconstitutionally vague or violate due process. A California court issues a ruling that blocks or narrows a key provision, such as the vehicle impoundment or felony eligibility.

3

Sideshows persist despite new penalties

Possible Resolves by End of 2027

Discussed by: Community groups and criminologists

The law has limited deterrent effect. Sideshows continue at similar rates, particularly in the Bay Area. Organizers adapt by using unregistered vehicles and social media to evade enforcement.

Historical Context

2 moments from history that rhyme with this story — and how they unfolded.

1994

California's 1994 street racing law

California made street racing a misdemeanor, giving law enforcement tools to arrest participants. The law was a response to a rise in illegal street racing, particularly in Southern California.

Then

Street racing arrests increased, but the practice continued in some areas.

Now

The law became the foundation for later sideshow enforcement efforts.

Why this matters now

AB 1588 aligns sideshow penalties with street racing, building on the 1994 framework.

2000s-2020s

Oakland's sideshow problem (2000s-2020s)

Oakland has been a hotspot for sideshows for decades. The city has tried various enforcement strategies, including increased patrols, checkpoints, and community outreach, with mixed results.

Then

Sideshows continued despite enforcement efforts.

Now

The persistence of sideshows in Oakland highlighted the need for statewide measures like AB 1588.

Why this matters now

The difficulty of controlling sideshows in Oakland and other Bay Area cities motivated the push for stronger state penalties.

Sources

(2)

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