Traffic Records Integration Program data is open to the public which can be requested for research use. Data requested through TRIP may not be used for-profit research. Please submit the data request form to the TRIP inbox based on the data that best fits your needs and the TRIP Variable request form.


A look at cohorts of Washington state multi-collision drivers from 2012 to 2019. The TRIP research brief looks at how many multi-collision drivers are on the road as well as trends in those seven cohorts.

Multi-Collision Drivers Impact on Washington - June 2021

Comparing the contributing circumstances that lead to collisions from cohorts of multi-collision and single collision drivers in Washington state from 2012-2019.

Multi-Collision Drivers: Contributing Circumstances - Nov. 2021