Reform California's Speed Limit Regulations

Here's something you already know: Speeding Kills.

But under California's deadly 85th Percentile Rule, agencies are required to set high speed limits.

Specifically they are required to measure the speeds of existing traffic in free-flowing conditions (i.e. with at least five seconds between cars), then set the speed at the nearest 5 mph increment of the 16th fastest car out of 100 (the 85th percentile speed). In other words, if the speed limit is currently 25 mph, but they measured the 85th percentile speed at 33 mph, the engineers are required to increase the speed limit to 35 mph! There are a few exceptions that allow agencies to reduce the speed limit by 5 mph, but a high crash rate—the rate of fatalities and injuries—can't be factored into the decision-making process.


Legislative Update: April 2018

AB 2363, by Assemblymember Laura Friedman (D-Glendale), allows agencies to round to within 5 mph of the 85th percentile speed, so that agencies can round down if necessary. It also adds the "potential for, and frequency of, traffic collisions resulting in death or injury" as another reason to reduce the speed limit by 5 mph. Learn more: AB 2363 Fact Sheet.

This is a small but important step in the direction of giving California's communities the authority to set speed limits that are safe. But making any changes to the 85th percentile—even for the safety of our most vulnerable users—is going to be a fight.

We can't let the speed demons kill this important bill.

Who's signing

Erik Lindskog
Thomas Flynn
Antoine Pham
Brian Dooley
Clarissa Van Cura
James Van Cura
Lynn Gallagher
Andreas Kadavanich
Cliff Bargar
James DeCaro
Kai Johnson
Ian McCown
Rachel Abercrombie
Misch Anderson
Wendi Kallins
patrick fetzer
Alex Trieger
Kit Lofroos
Marge Schwartz
ken yamamoto
David Harkness
Cherry Stockton
Calvin Thigpen
Doris Phinney
Cynthia Stahl
Ernie Ochoa
GOAL: 362 signatures

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Showing 323 reactions

  • Erik Lindskog
  • Thomas Flynn
  • Antoine Pham
  • Brian Dooley
  • Clarissa Van Cura
  • James Van Cura
  • Lynn Gallagher
    Sign the petition: Speed Limit Reform Petition
  • Lynn Gallagher
  • Andreas Kadavanich
    Sign the petition: Speed Limit Reform Petition
  • Andreas Kadavanich
  • Cliff Bargar
  • Lynn Gallagher
    Sign the petition: Speed Limit Reform Petition
  • James DeCaro
  • Kai Johnson
  • Ian McCown
  • Rachel Abercrombie
  • Misch Anderson
  • Wendi Kallins
  • patrick fetzer
  • Alex Trieger
  • Kit Lofroos
  • Marge Schwartz
  • ken yamamoto
  • David Harkness
  • Cherry Stockton
  • Calvin Thigpen
  • Doris Phinney
  • Cynthia Stahl
  • Ernie Ochoa
    Sign the petition: Speed Limit Reform Petition
  • Ernie Ochoa

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