2011 Michigan Seat Belt Observation Surveys

Sponsor: Michigan State Police

PI: John Hill

This report summarizes the findings of the statewide seatbelt survey completed in June following the May 2011 Click it or Ticket enforcement campaign.  191 Intersections were surveyed.  The overall seat belt use rate was 94.5%.  For the second survey in August, the seat belt use rate fell to 93.5%.  Additionally, information regarding cell phone use is contained in this report.  Cell phone use rate among drivers was 8.6% in June and 10.3% in August.  All data is organized by vehicle type, age, gender, race, and day and time.  Additionally, logistic regression models have been provided to identify the statistical significance of differences in seat belt use and cell phone use based on these characteristics.  Wayne County showed a significant increase in seat belt usage, and may be a case study for best practices.  With regard to cell phone usage, the survey identified Hispanics and females age 16‐29 as the primary users of cell phones while driving.