Provisional weekly police-reported injury crashes on state highways in California

Data on this page is updated daily and can be used to monitor the frequency and type of crashes that occur in the weeks prior, during, and after California’s stay home order, which went into effect on March 19, 2020 in response to the COVID-19 pandemic.

Note:

Provisional crash data are based on police reports of crashes that occurred on state highways. Crashes are added to the California Statewide Integrated Traffic Records System (SWITRS) by the California Highway Patrol (CHP) and we download them from the I-SWITRS website on a daily basis. There is a delay related to submitting, processing, and tabulating crash data into SWITRS. Due to this lag, the data shown on this page may exclude some relevant crashes, particularly those occurring in the most recent two to three weeks. Crash counts for all weeks are revised as new and updated crash data are received. These data do not currently include crashes that occurred on non-state roads.

Last Updated:

Collisions as of June 04, 2020 from CHP I-SWITRS

Police-reported injury crashes on state highways in California

Statewide Summary

  • Total Crashes are police-reported injury crashes on state highways
  • F+SI Crashes are police-reported injury crashes that has a fatal or severe injury
  • Vehicle Miles Traveled (Millions) is the measure of exposure (calculated by multiplying the amount of daily traffic by the directional distance)
  • 2019 data for the corresponding week in the previous year (e.g., Monday 3/16/2020 corresponds to Monday 3/18/2019)
  • Percent change from 2019 is the the positive or negative percent change in 2020 relative to the previous year. Percent change is labeled as Forthcoming for the most recent two weeks from the last updated date since many crashes are still being entered daily.
  • Pedestrian Crashes are police-reported injury crashes on state highways for which Pedestrian Collision = 'Y'
  • Bicycle Crashes are police-reported injury crashes on state highways for which Bicycle Collision = 'Y'
  • Total Crashes are police-reported injury crashes on state highways
  • F+SI Crashes are police-reported injury crashes that has a fatal or severe injury
  • 2019 data for the corresponding week in the previous year (e.g., Monday 3/16/2020 corresponds to Monday 3/18/2019)
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  • Unsafe Speed Crashes are police-reported injury crashes on state highways coded as Primary Collision Factor Violation: 03 - Unsafe Speed
  • Improper Turning Crashes are police-reported injury crashes on state highways coded as Primary Collision Factor Violation: 08 - Improper Turning
  • DUI Crashes are police-reported injury crashes on state highways coded as Primary Collision Factor Violation: 01 - Driving or Bicycling Under the Influence of Alcohol or Drug
  • Other Crashes are police-reported injury crashes on state highways for which the Primary Collision Factor Violation was not coded as 03, 08, or 01
  • 2019 data for the corresponding week in the previous year (e.g., Monday 3/16/2020 corresponds to Monday 3/18/2019)

Note: Data during this period are incomplete because of the lag in time between when the crash occurred and when the crash report is completed, submitted to SWITRS, and processed for reporting purposes.