@article{ref1,
title="Nighttime observations of safety belt use: an evaluation of California's primary law",
journal="American journal of public health",
year="1998",
author="Voas, Robert B. and Lange, James Evan",
volume="88",
number="11",
pages="1718-1720",
abstract="OBJECTIVES: An analysis was conducted to determine what effect California's change to a primary safety belt law had on safety belt use among nighttime weekend drivers. METHODS: Observations of 18,469 drivers in 2 California communities were made during voluntary roadside surveys conducted every other Friday and Saturday night from 9 PM to 2 AM for 4 years. RESULTS: Rates of safety belt use rose from 73.0% to 95.6% (P < .0005). For drivers with blood alcohol concentrations of 0.10 or higher, rates rose from 53.4% to 92.1% (P < .0005). CONCLUSIONS: Because substantial improvement in safety belt use was seen even in a group of high-risk drivers, the injury reduction benefits of this law may be high.",
language="",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}