1. Marijuana & Driving Data in Colorado
Jack K. Reed
Colorado Department of Public Safety, Division of Criminal Justice,
Office of Research & Statistics
August 2016

2. Components of Impaired Driving
Use

3. Date on Use
What we have
Prevalence surveys
Purchasing data

4. Young Adult Marijuana Usage Rates
Source: SAMHSA, National Survey on Drug Use and Health

5. Date on Use What we need Better trend data…start collecting now!
Information on types of usage-ingestion matters

6. Components of Impaired Driving
Use
Choice

7. Data on Choice What we have General surveys Periodic roadside
Media campaigns

8. Driving Choices High school students drove after using:
Marijuana—11%
Alcohol—8%
High school students drove after using:
Marijuana—9%
Alcohol—28%
Prescription drugs—6%
Adults drove after using:

9. Data on Choice What we need Timely & focused roadside surveys
Innovative data (e.g. Uber customer survey)
Better data on effectiveness of media campaigns

10. Components of Impaired Driving
Use
Choice
Detection

11. Data on DUID Detection What we have DUID arrests
Few agencies
Toxicology (limited & unlinked)
FARS

12. Fatalities on Colorado Roadways
Note: A positive test for cannabinoids may be the result of active THC or one of its inactive metabolites and does not necessarily indicate impairment. Source: Data provided by Colorado Department of Transportation, 8/4/2016.
2015 DATA ARE PRELIMINARY AND SUBJECT TO CHANGE

13. Driving Under the Influence Colorado State Patrol
Note: Citation type is classified according to the trooper’s impressions of the reason for impairment. Source: Data provided by Colorado State Patrol, 8/4/2016.

14. Data on DUID Detection What we need Improved detection capabilities
Improved crash forms
Reporting from all jurisdictions
Toxicology linked to cases and crashes
Timely reporting

15. Components of Impaired Driving
Use
Choice
Detection
Response

16. Data on Response What we have Court filings Pre-sentence assessments
Probation
Treatment prevalence
Recidivism

17. Data on Response

18. Data on Response What we need Response affect on recidivism
Linked offense location

19. Data Sources

20. Recommendations
Convene stakeholders to discuss data now. You will need to make changes!
Transportation
Local law enforcement
State public safety
Judicial
Community supervision
Public health
Human services

21. Colorado Division of Criminal Justice
Contact Information
Jack Reed
Colorado Division of Criminal Justice
700 Kipling St., Suite 1000
Lakewood, CO 80215