Research Studies

We research traffic safety issues, including measuring the impact and effectiveness of Washington’s traffic safety programs.

Impaired Driving

• Deferred Prosecution of DUI Cases in Washington State: Evaluating the Impact on Recidivism (2007)
• Evaluation of the 1998 DUI Laws (2002) (65.84 KB)

Speeding

• Vehicle Speeds in School Zones (1999) ()
• Automated Speed Enforcement Pilot Project Evaluation (1.96 MB)

Seat Belts & Occupant Protection

• The Last Five Percent: Who are the non-users of seat belts in Washington State? (2005 – Salzberg & Beard) ()
• Seat Belt Use Rates in Primary Law State Compared to Neighboring Secondary Law State – 2005 ()
• Ninety Five Percent: An Evaluation of Law, Policy and Programs to Promote Seat Belt Use in Washington State (2003 - Salzberg & Moffat) ()
• Predicting Seat Belt Use in Fatal Crashes ()
• Seat Belt Use Rates by County 2011 (52.37 KB)
• Seat Belt Use Rates in Washington (58.12 KB)

Distracted Driving

• Cell Phone Use by Motor Vehicle Drivers in Washington State (2002 – Salzberg) (46.68 KB)
• Cell Phone Research Summary (22.56 KB)

Pedestrians & Bicycles

• Evaluation of Targeted Pedestrian Enforcement (Salzberg & Moffat) – 2003 (50.59 KB)
• Evaluation of the Dept. of Licensing Special Exam Program (1998) (260.76 KB)

Heavy Trucks

• TACT Final Report (1.6mb)

Complex research question? Contact us.

Program Contact

Dick Doane – Research Investigator

360.725.9894 ddoane@wtsc.wa.gov

Kristal Rust – Research Analyst

360.725.9893 krust@wtsc.wa.gov