TECHNICAL SUMMARY
| CONTRACTOR Preusser Research Group, Inc |
CONTRACT NUMBER DTNH22-98-D-45079 |
| REPORT TITLE State Laws and Practices for BAC Testing and Reporting Drivers Involved in Fatal Crashes |
REPORT DATE March 2004 |
| REPORT AUTHOR (S) James H. Hedlund, Robert G. Ulmer and Veronika Shabanova Northrup |
|
This report presents the results of a study of alcohol testing and reporting methods and rates for drivers involved in fatal traffic crashes. It identifies the best practices currently in use and the major barriers to increasing testing, as determined from detailed studies of ten States. It concludes with suggestions for implementing these best practices.
BACKGROUND
The National Highway Traffic Safety Administration (NHTSA) estimates that more than one-quarter of all drivers in fatal crashes in 2002 had a positive Blood Alcohol Concentration (BAC), and 21 percent had a BAC level at or above the typical per se limit of 0.08. Accurate State and national data are critical to measure the size of this impaired driving problem, describe its characteristics, evaluate trends, explore potential countermeasures, and evaluate the effects of laws and programs.
The most accurate data come from a blood or breath measurement of a driver’s BAC. In 2002, NHTSA’s Fatality Analysis Reporting System (FARS) annual report data file recorded BACs for 65 percent of fatally injured drivers, 25 percent of surviving drivers, and 43 percent of all drivers in fatal crashes.
STUDY GOALS AND ACTIVITIES
This study’s goals were to identify the best practices for, and the barriers and problems that hinder, obtaining BAC data for drivers involved in fatal traffic crashes, and to provide recommendations for States that wish to improve their BAC testing and reporting. The study reviewed each State’s laws affecting BAC testing, recent testing rates, and other information on each State’s practices and results. With the advice of a steering committee representing the organizations and disciplines involved in BAC testing and reporting, ten diverse States were chosen for detailed examination. Known BAC rates in 2001 ranged from 89 percent to 45 percent for fatally injured drivers, and from 83 percent to 1 percent for surviving drivers, across the ten States. Through personal and telephone interviews, project staff examined in detail each State’s BAC laws, policies, practices, procedures, and testing results.
STATE LAWS REGARDING BAC TESTING IN FATAL CRASHES
Fatally Injured Drivers
State
law type |
2002
State BAC Testing Rates |
||
|---|---|---|---|
Lowest
State's rate |
Median
State's rate |
Highest
State's rate |
|
| Mandatory test | 43 % |
82 % |
91 % |
| Discretionary test | 37 % |
70 % |
83 % |
| No law | 16 % |
80 % |
98 % |
Testing rates varied widely for States with each law type. A mandatory law by itself does not guarantee a high testing rate, and high rates can be obtained under each type of law.
State medical examiners in many States or jurisdictions have adopted the practice of conducting a BAC test on every traffic fatality so that the medical examiner’s report can assess whether alcohol may have affected the death. Each of the ten study States had a mandatory testing law or medical examiner practice of testing all traffic fatalities. The two States with less than 80 percent known BACs had not implemented the law or practice in all areas of the State.
Surviving Drivers
The five mandatory test law States had by far the highest testing rates, followed by States with no special law. At least one State in each law category (with the exception of the statistical purposes law) tested more than 70 percent of the surviving drivers.
| State law type | 2002
State BAC Testing Rates |
||
|---|---|---|---|
| Lowest State’s rate | Median State’s rate | Highest State’s rate | |
| Mandatory test | 47 % |
79 % |
90 % |
| Reduced standard | 9 % |
22 % |
76 % |
| Required if DWI | 4 % |
32 % |
74 % |
| Statistical purposes | 22 % |
||
| No law | 1 % |
33 % |
72 % |
Some law enforcement jurisdictions request voluntary tests from all surviving
drivers not suspected of Driving While Impaired (DWI), as well as requesting
tests of the remaining drivers under standard DWI procedures. Most drivers
comply with this request. Many traffic fatalities in some States are investigated
by dedicated teams or by Highway Patrol/State Police officers, who have the
training and incentive to achieve high testing rates.
State Insurance Laws and Regulations
Many emergency treatment facilities draw blood from trauma patients for clinical
purposes. This clinical blood sample may be the only source of a useful BAC
test result. Until recently, the Uniform Accident and Sickness Policy of
the National Association of Insurance Commissioners (NAIC) had a provision
that allowed insurers to deny payment for medical treatment of intoxicated
persons. More than 30 States adopted this provision, which substantially
impedes BAC testing and reporting in some States. NAIC repealed this provision
in 2001, but many States have not yet eliminated it from their laws or insurance
codes.
BAC TESTING AND REPORTING PROCESSES
Three fundamentally different circumstances occur in obtaining a BAC from a driver in a fatal crash. When the driver dies at the crash scene, the coroner or medical examiner is responsible for investigating the death and obtaining any BAC information. Some medical examiners and coroners may not choose to draw a blood sample and some may not have appropriate equipment or training. Laboratories may have no standard procedure for reporting BAC results and reports may be delayed for many months.
When the driver is transported to an Emergency Department (ED) for treatment,
the investigating law enforcement officer is responsible for requesting a blood
sample in a timely manner from the facility or a BAC value from the facility’s
analysis of a blood sample. Law enforcement must first establish that the driver
meets the State’s requirements for a test. Medical facilities may require
a warrant before drawing a blood sample and may be reluctant to draw a sample
if insurance companies may not pay treatment costs for intoxicated drivers.
When the driver remains at the crash scene, the investigating law enforcement officer is responsible for determining if a BAC test is allowed under the State’s laws and then administering a breath test or transporting the driver to a person authorized to draw a blood sample.
CONCLUSIONS AND BEST PRACTICES
No one model BAC testing and reporting system applies to all States. The following best practices are presented both as general principles that each State can apply within its own structure and as examples from the study States that other States may wish to adopt or adapt.
Who is tested: fatally injured
drivers |
|
Conclusions |
Best practices |
|
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Who is tested: surviving drivers |
|
Conclusions |
Best practices |
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Who is tested: drivers taken
to medical facilities |
|
Conclusions |
Best practices |
|
|
How test results are transmitted
to FARS |
|
Conclusions |
Best practices |
|
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How the process is managed |
|
Conclusions |
Best practices |
|
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IMPLEMENTATION
States have primary responsibility for BAC testing and reporting and for implementing
the best practices discussed in this report. Each State should consider its
own BAC testing and reporting rates and processes. If improvements are sought,
each State should implement the strategies and best practices that are most
appropriate to its situation. Other organizations can and should assist States
through activities including the following.
National Highway Traffic Safety Administration (NHTSA)
Governors Highway Safety Association (GHSA)
National Association of Medical Examiners (NAME)
National District Attorneys Association (NDAA)
All Organizations
PREPARED FOR THE DEPARTMENT OF TRANSPORTATION, NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, UNDER CONTRACT NO: DTNH22-98-D-45079. THE OPINIONS, FINDINGS, AND CONCLUSIONS EXPRESSED IN THIS PUBLICATION ARE THOSE OF THE AUTHORS AND NOT NECESSARILY THOSE OF THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION.
HS Form 321
July 1974