Study Purpose and Objectives 

The purpose of this statewide study was to perform observational surveys for 210 intersections, 
freeway ramps, and rest areas to determine the percentage of drivers and front-seat passengers in 
commercial motor vehicles utilizing their safety belts. 
 
The specific objectives of this project were as follows: 
 
1. Develop a probability-based methodology for collecting data for a representative 
sample of locations throughout the State, which will ensure reliable statewide 
statistics, in an economically feasible manner. 
 
2. Perform sampling to identify the geographic areas and specific locations where 
observational surveys need to be performed within the state. 
 
3. Provide training to all staff conducting the direct observation surveys and conduct 
Quality Assurance/Quality Control (QA/QC) of the data collection efforts. 
 
4. Conduct direct observation surveys and record data regarding seat belt use, non-use 
or misuse by the drivers and front seat passengers of commercial motor vehicles 
along with other relevant factors for each day of the week and each hour of the day.