Transportation Safety Data

Why is it important?

From 2005 to 2016, 233 people lost their lives in motor vehicle crashes in Thurston County. Transportation safety data allow our partners to identify their highest priorities and most effective strategies at increasing safety.

What are some of our major concerns?

Washington State developed a Strategic Highway Safety Plan in 2016 called “Target Zero.” The goal of the plan is zero traffic fatalities and serious injuries on our roads and highways. The Target Zero Plan identifies priority areas based on factors contributing to the number of fatalities or serious injuries. In Thurston County, the most common factors contributing to traffic-related fatalities or serious injuries are:
  • Impairment
  • Speeding
  • Distraction
  • Young drivers

** Data currently unavailable for this measure.
†Run off the road, intersection-related, opposite direction multi-vehicle, and road types are defined by WSDOT and derived from the statewide collision database.

Supporting Data

Quarterly Target Zero Data by County
Quarterly data by Target Zero priority areas
(Washington Traffic Safety Commission)

WA State Crash Data Portal
Summary reports and online maps of major and minor traffic crashes
(WA State Department of Transportation)

Federal Safety Performance Measures

In 2012, the federal government passed a transportation act called Moving Ahead for Progress in the 21st Century (MAP-21). The Act created a performance measure framework to measure states’ progress on meeting specific goals related to transportation, including safety goals. TRPC’s function as a Metropolitan Planning Organization (MPO) requires us to work with the State to develop and adopt performance measures.

The five performance measures for transportation safety are:

  1. Number of fatalities on all public roads
  2. Number of fatalities per 100 million vehicle miles traveled (VMT) on all public roads 
  3. Number of serious injuries on all public roads 
  4. Number of serious injuries per 100 million VMT on all public roads
  5. Number of non-motorist fatalities and serious injuries on all public roads (e.g., bicyclists and pedestrians)

The State has adopted a goal that by 2030 there will be zero traffic-related fatalities and serious injuries. Track the data on The Profile.

What is TRPC Doing?

In 2018, the Council adopted safety targets and integrated them into the Regional Transportation Plan.


Under United States Code Title 23 Section 409, this data cannot be used in discovery or evidence at trial in any action for damages against Thurston Regional Planning Council, or the jurisdictions involved in the data.