Links to Studies & other information

[DebH]

http://www.cannabislink.ca/gov/senatesumm.htm#chap8

SENATE SPECIAL COMMITTEE ON ILLEGAL DRUGS CANNABIS : SUMMARY REPORT

Highlights

CHAPTER 8 - DRIVING UNDER THE INFLUENCE OF CANNABIS

The Committee feels it is quite likely that cannabis makes users more cautious, partly because they are aware of their deficiencies and compensate by reducing speed and taking fewer risks. However,because what we are dealing with is no longer the consequences on the users themselves,but the possible consequences of their behaviour on others,the Committee feels that it is important to opt for the greatest possible caution with respect to the issue of driving under the influence of cannabis.
Given what we have seen,we conclude the following:

Between 5% and 12% of drivers may drive under the influence of cannabis; this percentage increases to over 20% for young men under 25 years of age;

Cannabis alone,particularly in low doses,has little effect on the skills involved in automobile driving. Cannabis leads to a more cautious style of driving. However it has a negative impact on decision time and trajectory.

This in itself does not mean that drivers under the influence of cannabis represent a traffic safety risk;

A significant percentage of impaired drivers test positive for cannabis and alcohol together. The effects of cannabis when combined with alcohol are more significant than is the case for alcohol alone;

Despite recent progress,there does not yet exist a reliable and non intrusive rapid roadside testing method;

Blood remains the best medium for detecting the presence of cannabinoids;

Urine cannot screen for recent use;

Saliva is promising,but rapid commercial tests are not yet reliable enough;

The visual recognition method used by police officers has yielded satisfactory results; and

It is essential to conduct studies in order to develop a rapid testing tool and learn more about the driving habits of cannabis users.

[DebH]

Drugged Driving facts [CannabisFacts.ca]
http://cannabisfacts.ca/druggeddriving.html

Efficacy of impairment testing
http://cannabisculture.com/articles/4131.html

Marijuana and Driving: A Review of the Latest Scientific Evidence
http://www.norml.org/index.cfm?Group_ID=5450

DUID Legislation:
What It Means, Who's Behind It, and Strategies to Prevent It
http://www.norml.org/index.cfm?Group_ID=6492

The Pot and Driving Campaign (Health Canada campaign)
http://www.potanddriving.cpha.ca/index.html

Stoned Drivers are Safe Drivers
http://cannabisculture.com/articles/4131.html

http://www.cannabislink.ca/medical/#meddrivingstudies

DRIVING STUDIES
http://www.ccguide.org.uk/driving.html

Cannabis Reports: Driving
http://web.archive.org/web/20050308182910/http://davidhadorn.com/cannabis/mjcannabis.html#drivingl


Performance testing is better than drug testing
Cannabis Culture, January 2005
http://cannabisculture.com/articles/4130.html

Alternatives to Drug Testing: Performance testing Non-testers List
http://www.nontesterslist.com/nontesters/ptest.html

Performance testing can add an extra measure of safety
HR Magazine, February 1996
http://www.findarticles.com/p/articles/mi_m3495/is_n2_v41/ai_18159115

An Alternative to Drug Testing
Inc Magazine, April 1995
http://www.inc.com/magazine/19950401/2235.html

[DebH]

http://cannabiscoalition.ca/html/index.php?name=Downloads&d_op=viewdownload&cid=12
In the CCC Downloads Section:

A Review Of Cannabis And Driving Skills
Description: David Hadorn PhD - This chapter reviews some of the attempts to define the complex effects of cannabis on driving behaviour. The effects of cannabis are put into context with recreational and prescription drugs


Crash Culpability Relative To Age And Sex
Description: Soderstrom et al. ABSTRACT While there is a great deal of data documenting the etiologic role alcohol use plays in crash culpability, there is a dearth of data for other drugs. The purpose of this study was to assess crash culpability for single drug use among injured drivers admitted to a regional trauma center. This study is the largest of its kind involving trauma center patients.

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Psychoactive Substance Use And The Risk Of Motor Vehicle Accidents
Description: K.L.L. Movig, et. al : Abstract - The driving performance is easily impaired as a consequence of the use of alcohol and/or licit and illicit drugs. However, the role of drugs other than alcohol in motor vehicle accidents has not been well established. The objective of this study was to estimate the association between psychoactive drug use and motor vehicle accidents requiring hospitalisation.