WTSC - Traffic Safety Statewide Survey - 2023 - Sampling Plan - v1 Monday October 16, 2023 9:18 AM Washington Traffic Safety Commission (WTSC) Source https://wtsc.wa.gov/.../WA-WTSC-Traffic-Survey-2023-Sampling-Plan-02.03.2023.pdf Published: Tuesday October 17, 2023 10:05 AM Replications Cannabis Observer Information Set Membership WTSC - Traffic Safety Statewide Survey - 2023