Communication Software Inc. - Clients: Traffic Safety Studies: Arizona 2001 Report

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Executive Summary

This document reports results of the 2001 annual statewide survey of vehicle safety belt use, child restraint use and motorcycle helmet use in the State of Arizona. The data collection and analysis for this study was conducted by CSI^® Santa Rita Research Center (CSI-SRRC) from June 4, 2001 to July 31, 2001. This study was preceded by the 2000 annual survey of similar size completed in July 2000. The purpose of Arizona’s studies of seat belt use is to provide reliable data from which generalizations, comparative analysis and recommendations can be drawn. This study was funded by the Governor’s Office of Highway Safety (GOHS).

The 2001 survey was based on a random probability sample of signalized and stop sign intersections in Arizona designed by CSI-SRL, and subsequently reviewed by NHTSA’s statistical research division staff. Observations were made at 127 sites located in six counties with data from 31,740 vehicles including motorcycles. Observations were conducted during daytime hours. Each site observation lasted a total of one hundred twenty minutes each. In the 2001 survey, all observations were made in the same locations, same time of day, and same day of week as the 2000 survey. CSI^® trained observers recorded whether drivers and front seat passengers wore belts.

Groups under observation	2001 Study	2000 Study	1999 Study	1998 Study	1997 Study
All Drivers (male and female) Seat Belt Use	74.29%	74.99%	71.24%	62.23%	63.24%
Front Seat Occupants	74.35%	75.17%	71.05%	58.27%	63.38%
Children Safety Restraint Use	72.03%	71.68%	85.58%	80.09%	75.56%^[1]
Motorcycle Helmet Use	41.69%	39.01%	61.23%	50.34%	43.82%

The highest seat belt usage rates for male and female are:
View Graphical presentation of the Data

Sex	2001 Highest Usage	2000 Highest Usage	1999 Highest Usage	1998 Highest Usage	1997 Highest Usage
Male Driver	71.34% in Yavapai	72.10% in Coconino	67.09% in Maricopa	58.63% in Maricopa	59.94% in Maricopa
Female Driver	81.85% in Maricopa	86.17% in Maricopa	82.05% in Maricopa	69.95% in Maricopa	71.04% in Pima
Male Passenger	70.48% in Pima	70.71% in Coconino	57.14% in Maricopa	50.38% in Pima	49.22% in Maricopa
Female Passenger	80.22% in Maricopa	85.13% in Maricopa	77.17% in Maricopa	69.99% in Pima	69.02% in Maricopa

It appears that the overall Driver and Front Seat Occupant Seat Belt Usage for the year 2001 is the same as the year 2000, since the margin of error is ± 3%.


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