Welcome to DU! The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards. Join the community: Create a free account Support DU (and get rid of ads!): Become a Star Member Latest Breaking News General Discussion The DU Lounge All Forums Issue Forums Culture Forums Alliance Forums Region Forums Support Forums Help & Search

Unknown Beatle

(2,672 posts)
Mon Sep 14, 2015, 05:50 PM Sep 2015

Since Colorado legalized marijuana, highway fatalities are way down

One of the boogiemen of legalizing a previously banned substance is that fear that our streets will become populated by drug-addled drivers, plowing into family station wagons and school buses. Opponents to legalizing marijuana point to studies that show increases in drivers testing positive for marijuana while driving. Proponents of ending the prohibition on marijuana point to similar studies showing that these people testing positive for marijuana are usually in trouble because they are also drunk-driving. Radley Balko, over at the Washington Post has put together some interesting findings concerning driving fatalities in Colorado, since they legalized pot in 2012:

[center]


As you can see, roadway fatalities this year are down from last year, and down from the 13-year average. Of the seven months so far this year, five months saw a lower fatality figure this year than last, two months saw a slightly higher figure this year, and in one month the two figures were equal. If we add up the total fatalities from January through July, it looks like this:



Here, the “high” bar (pardon the pun) is what you get when you add the worst January since 2002 to the worst February, to the worst March, and so on. The “low” bar is the sum total of the safest January, February, etc., since 2002. What’s notable here is that the totals so far in 2014 are closer to the safest composite year since 2002 than to the average year since 2002. I should also add here that these are total fatalities. If we were to calculate these figures as a rate — say, miles driven per fatality — the drop would be starker, both for this year and since Colorado legalized medical marijuana in 2001. While the number of miles Americans drive annually has leveled off nationally since the mid-2000s, the number of total miles traveled continues to go up in Colorado. If we were to measure by rate, then, the state would be at lows unseen in decades.
[/center]

More: Daily Kos
14 replies = new reply since forum marked as read
Highlight: NoneDon't highlight anything 5 newestHighlight 5 most recent replies
Since Colorado legalized marijuana, highway fatalities are way down (Original Post) Unknown Beatle Sep 2015 OP
All the more reason to crack down on teh pot! Warren DeMontague Sep 2015 #1
A lot of people would, if it was legal in their state, Jamastiene Sep 2015 #2
Agree wholeheartedly Egnever Sep 2015 #4
Hard to get in a fatal accident when you're only going 15 mph Moral Compass Sep 2015 #3
Exactly Where My Mind Went! ProfessorGAC Sep 2015 #14
Why go out - when you can stay at home and get stoned? jonno99 Sep 2015 #5
Nonsense Jeroen Sep 2015 #6
The argument has been that legal pot leads to increased traffic deaths due to impaired drivers Fumesucker Sep 2015 #9
"Studies show that driving under the influence of marijuana increases ... accidents." Source? Scuba Sep 2015 #10
Cannabis Effects on Driving Skills Jeroen Sep 2015 #12
Ah! Iggo Sep 2015 #13
Those graphs are bogus Massacure Sep 2015 #7
Well legalization (distinct from decriminalization, mind you) has clearly NOT led to a bloodbath on Warren DeMontague Sep 2015 #8
Ironically... CanSocDem Sep 2015 #11

Warren DeMontague

(80,708 posts)
1. All the more reason to crack down on teh pot!
Mon Sep 14, 2015, 05:52 PM
Sep 2015

Clearly it lowers peoples' performance at things, like killing other people on the freeway!

Jamastiene

(38,187 posts)
2. A lot of people would, if it was legal in their state,
Mon Sep 14, 2015, 05:56 PM
Sep 2015

rather smoke a joint than drink. They drink because that's all they can legally do.

 

Egnever

(21,506 posts)
4. Agree wholeheartedly
Mon Sep 14, 2015, 06:02 PM
Sep 2015

Why have a hang over or risk having too much to drink.
You can never smoke too much pot. At some point you hit a plateau and don't get any more stoned no matter how much you smoke.

With alcohol especially with mixed drinks it is easy to have one too many.

Give me a nice joint any day over alcohol.

Moral Compass

(1,521 posts)
3. Hard to get in a fatal accident when you're only going 15 mph
Mon Sep 14, 2015, 06:01 PM
Sep 2015

The above is written with tongue firmly in cheek. However, it is really hard to drive all that fast when you're high.

There's something about marijuana that makes you very very cautious. I guess because it doesn't give you that feeling that you are better than you are. Alcohol on the other hand gives you the feeling that you can do anything and by God you can do probably do it better then you can when you're sober.

ProfessorGAC

(65,061 posts)
14. Exactly Where My Mind Went!
Tue Sep 15, 2015, 11:56 AM
Sep 2015

I remember Tommy Boy. "Do you know how fast you were going?" "No officer" "12 mph!"

Jeroen

(1,061 posts)
6. Nonsense
Mon Sep 14, 2015, 06:29 PM
Sep 2015

There is no scientific prove whatsoever that this data is related to legalized marijuana.
Studies show that driving under the influence of marijuana increases the risk of accidents.






Fumesucker

(45,851 posts)
9. The argument has been that legal pot leads to increased traffic deaths due to impaired drivers
Mon Sep 14, 2015, 07:14 PM
Sep 2015

The data presented in the OP refutes that argument, that is all.

 

Scuba

(53,475 posts)
10. "Studies show that driving under the influence of marijuana increases ... accidents." Source?
Tue Sep 15, 2015, 09:10 AM
Sep 2015

Jeroen

(1,061 posts)
12. Cannabis Effects on Driving Skills
Tue Sep 15, 2015, 11:46 AM
Sep 2015

Here are few, to be fair: it's a mixed bag. Some studies suggest that the influence of cannabis on the drivers' performance is minimal.


1. Cannabis Effects on Driving Skills
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3836260/
Research studies have shown negative effects of marijuana on drivers, including an increase in lane weaving and poor reaction time and attention to the road. Use of alcohol with marijuana made drivers more impaired, causing even more lane weaving (Hartman, 2013).


2. Dose related risk of motor vehicle crashes after cannabis use
http://www.drugandalcoholdependence.com/article/S0376-8716(03)00284-9/abstract?cc=y=

The role of Δ9-tetrahydrocannabinol (THC) in driver impairment and motor vehicle crashes has traditionally been established in experimental and epidemiological studies. Experimental studies have repeatedly shown that THC impairs cognition, psychomotor function and actual driving performance in a dose related manner. The degree of performance impairment observed in experimental studies after doses up to 300 μg/kg THC were equivalent to the impairing effect of an alcohol dose producing a blood alcohol concentration (BAC) ≥0.05 g/dl, the legal limit for driving under the influence in most European countries.


3. Psychoactive substance use and the risk of motor vehicle accidents
http://www.sciencedirect.com/science/article/pii/S0001457503000848

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.


Massacure

(7,525 posts)
7. Those graphs are bogus
Mon Sep 14, 2015, 07:07 PM
Sep 2015

I fully support decriminalization of marijuana, but claim Colorado's decrease in fatalities is related to the legalization of marijuana is just plain wrong.

First, just because there is correlation does not mean there is causation.

Second, you cannot trust the high since 2002 and the low since 2002 figures. Per Colorado's Department of Transportation, January's highest death count was 2002 (53), Februaries highest death count was in 2004, March's was in
2004, April's in 2003, May's in 2002, June's in 2002, and July's in 2004. You cannot cherry pick the highest and lowest number for each month and add them together.

Third, the fewest deaths on Colorado roads took place in 2011, the year before marijuana was legalized. Per the National Highway Traffic Safety Administration, 465 people died on Colorado roads in 2009, 450 in 2010, 447 in 2011, 474 in 2012 and 481 in 2013.

Fourth, those numbers do not take into amount the number of miles driven. If people drive more miles, the likely hood of being in a crash increase and vice-versa.

Lastly, road deaths have been on a steady decline. I only have data back to 1994 (The NHTSA again), but Colorado set a record low number for fatalities per 100 million miles driven in 1996, 1997, 1998, 1999, 2003, 2004, 2005, 2006, 2009, 2010. Additionally, Colorado has only seen a year over year increase six times between 1994 and 2013.

A long story short, highway deaths has been declining for a long time, and not because of marijuana legalization.

Warren DeMontague

(80,708 posts)
8. Well legalization (distinct from decriminalization, mind you) has clearly NOT led to a bloodbath on
Mon Sep 14, 2015, 07:09 PM
Sep 2015

CO roads.

So it takes away another argument in the prohibitionists' arsenal, doesn't it.

 

CanSocDem

(3,286 posts)
11. Ironically...
Tue Sep 15, 2015, 09:24 AM
Sep 2015


...when they criminalized cannabis for truck drivers, there was no discernible decrease in highway fatalities.


Some argue there was an increase in highway accidents and incidents of road rage.


.
Latest Discussions»General Discussion»Since Colorado legalized ...