TRAFFIC SAFETY

1
TRAFFIC SAFETY ALCOHOL-RELATED COLLISIONS

• Presentation for
• Indiana Criminal Justice Institute DUI Training
• August 17, 2007
• Presented by
• The Center for Urban Policy and the Environment
• Samuel Nunn
• Additional Traffic Safety Team Members
• Kathy Lisby, Matt Nagle, Dona Sapp, Bill Newby,
  Debbie Wyeth, Nichole Kloehn, Megan LaMade

2
HOW ALCOHOL-RELATED COLLISIONS ARE DEFINED, 2006

• Definition
• One or more of the following conditions are met
  in VCRS/ARIES
• Alcoholic Beverages is listed as the primary
  factor of the collision,
• Alcoholic Beverages is listed as a contributing
  circumstance in the collision,
• Any vehicle driver or non-motorist (pedestrian,
  pedalcyclist) involved in the collision had a BAC
  test result greater than zero,
• The collision report lists apparent physical
  condition of any vehicle driver or non-motorist
  involved as had been drinking, or
• A vehicle driver is issued an Operating While
  Intoxicated (OWI) citation.

3
Impacts of alcohol? Individuals in non-alcohol
alcohol-related collisions by injury status
4
What units are involved in alcohol-related
collisions?
5
Alcohol-related as percent of ALL crashes, by age
group
6
Alcohol-related as percent of FATAL crashes, by
age group
7
Whos driving? Driver fatalities by gender, age,
BAC test results
8
When are crashes occurring? Total fatal
personal injuries resulting from alcohol-related
crashes, by day and time 2006
9
Where are crashes occurring? Five high density
cluster of alcohol-related, injury collisions,
Marion County, 2006
10
Cluster 1 Central Indianapolis

• Area 10.47 sq. mi.
• Perimeter 18 mi.
• Street miles 259
• Collisions 61
• Injuries 84
• Fatal injuries 1

11
Cluster 3 Far Eastside, Indianapolis
Area 5.33 sq. mi. Perimeter 11 mi. Street
miles 82 Collisions 24 Injuries 35 Fatal
injuries 0
12
ALL OWI CONVICTIONS NOT JUST TRAFFIC RELATED
13
BAC testing of traffic fatalities varies among
Indiana counties
14

• CONCLUSIONS AND RECOMMENDATIONS
• Pickups, SUVs and motorcycles appear to be
  over-represented in alcohol-related collisions
  more likely to produce fatal and non-fatal
  injuries
• Those at highest risk males between ages of 21
  and 39 TARGET ALCOHOL-RELATED PROGRAMS TO THIS
  GROUP
• Indiana counties test, on average, about ½ of
  their fatalities for alcohol LEARN STRATEGIES
  OF SUCCESSFUL COUNTIES AND REPLICATE
• BAC test results corroborate legal intoxication
  ASSURE UPDATED TEST RESULTS ARE ENTERED INTO
  VCRS/ARIES
• Prime time for alcohol-related collisions is
  weekends, from 6pm Friday to 6am Monday FOCUS
  ALCOHOL ENFORCEMENT DURING THOSE TIMES