What Is a Sobriety Checkpoint?
A sobriety checkpoint is a roadblock set up by law enforcement officers to detect
and deter impaired driving in locations where there is a high incidence of crashes
and fatalities (Elder, et. al., 2002). At checkpoints, multiple law enforcement officers
(ranging in number from 2 to 15 or more) funnel all traffic into a controlled area
and perform brief interviews (10 – 30 seconds) with drivers to determine if they
are impaired by alcohol or other substances. If the interviewing officer suspects
impairment, the officer directs the driver out of the flow of traffic to a secondary
officer for further impairment screening.
Overview of Research Results Related to the Effectiveness of Sobriety
Checkpoints
• The Centers for Disease Control (CDC) recommends sobriety checkpoints as an
effective countermeasure for motor-vehicle injury prevention based on strong
evidence presented in peer-reviewed research.
• An overview of the research from the past 30 years consistently demonstrates
that sobriety checkpoints reduce alcohol-impaired crashes by 20% and fatal
crashes thought to involve alcohol by 20% and 26%.
• Officers make one arrest every 6.5 hours when using checkpoints, compared to
one arrest every 7.5 hours on regular patrol.
• Checkpoint Tennessee, one of the most frequently cited, methodologically
sound, and rigorous studies, found a 20.4% reduction of alcohol-related
fatalities. The deterrent effect lasted for almost two years following the
conclusion of the checkpoint program.
• Sobriety checkpoints have a strong return on investment: $144 to $1.
• Sobriety checkpoints can be successfully operated with just a few officers.
• Although surveys did not specifically focus on Texas, national and targeted
opinion polls found strong support for the use of sobriety checkpoints (73%)
even among those who reported that they have driven after drinking during the
last month (57%).
• Thirty-eight states conduct sobriety checkpoints, some more frequently than
others – those that do not conduct sobriety checkpoints either consider them
illegal by law or state constitution or the state provides no explicit authority
to conduct them or prohibits them based on their interpretation of the U.S.
Constitution (as of 2/2011).
What Is a Sobriety Checkpoint?
A sobriety checkpoint is a roadblock set up by law enforcement officers to detect
and deter impaired driving in locations where there is a high incidence of crashes
and fatalities (Elder, et. al., 2002). At checkpoints, multiple law enforcement officers
(ranging in number from 2 to 15 or more) funnel all traffic into a controlled area
and perform brief interviews (10 – 30 seconds) with drivers to determine if they
are impaired by alcohol or other substances. If the interviewing officer suspects
impairment, the officer directs the driver out of the flow of traffic to a secondary
officer for further impairment screening.
Overview of Research Results Related to the Effectiveness of Sobriety
Checkpoints
• The Centers for Disease Control (CDC) recommends sobriety checkpoints as an
effective countermeasure for motor-vehicle injury prevention based on strong
evidence presented in peer-reviewed research.
• An overview of the research from the past 30 years consistently demonstrates
that sobriety checkpoints reduce alcohol-impaired crashes by 20% and fatal
crashes thought to involve alcohol by 20% and 26%.
• Officers make one arrest every 6.5 hours when using checkpoints, compared to
one arrest every 7.5 hours on regular patrol.
• Checkpoint Tennessee, one of the most frequently cited, methodologically
sound, and rigorous studies, found a 20.4% reduction of alcohol-related
fatalities. The deterrent effect lasted for almost two years following the
conclusion of the checkpoint program.
• Sobriety checkpoints have a strong return on investment: $144 to $1.
• Sobriety checkpoints can be successfully operated with just a few officers.
• Although surveys did not specifically focus on Texas, national and targeted
opinion polls found strong support for the use of sobriety checkpoints (73%)
even among those who reported that they have driven after drinking during the
last month (57%).
• Thirty-eight states conduct sobriety checkpoints, some more frequently than
others – those that do not conduct sobriety checkpoints either consider them
illegal by law or state constitution or the state provides no explicit authority
to conduct them or prohibits them based on their interpretation of the U.S.
Constitution (as of 2/2011).
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