Legalizing Recreational Marijuana Could Boost Crash Rates, Safety Group Warns

Ron Strider

Well-Known Member
A traffic safety organization is warning that two recent studies suggest that legalizing recreational marijuana could lead to an increase in crashes, including deadly ones.

The Insurance Institute for Highway Safety (IIHS) says that studies by the Highway Loss Data Institute and researchers at the University of Texas at Austin point to an increase in crash risk in states that legalized the recreational use of pot.

The Highway Loss Data Institute – which, like the IIHS, is a nonprofit organization backed by insurance companies – reported in June that insurance companies received higher-than-expected collision claims in Colorado, Washington and Oregon after those states allowed people to buy marijuana for recreational purposes. The frequency of claims rose about 3 percent, compared with surrounding western states that continued to have laws on the books prohibiting recreational use of marijuana, the institute found.

Meanwhile, the University of Texas study also found an increase in fatal crashes in two states that fully legalized pot. Yet the authors of the UT study – which was published in the online edition of the American Journal of Public Health in June – also said that the increase was too small to be statistically significant.

The IIHS, in its upcoming Status Report newsletter, takes a slightly different view of the Texas study than the Texas researchers did. The IIHS argues that the Texas study may have been structured in such a way as to have underestimated the effect of recreational marijuana use.

For example, UT researchers focused on a period that coincided with voters' legalization of recreational marijuana in one of the targeted states – but before weed became widely available for purchase. The IIHS said it makes sense that a larger effect might have been seen when looking at crash rates after retail sales began.

The upshot, according to the IIHS, is that the early evidence suggests that making it easier for people to get high is also likely to make it easier for people to wreck their vehicles.

But the question is far from settled, and probably the aspect all the studies agree on is the need for more research. In December, for example, Columbia University researchers reported a reduction in traffic fatalities in states that enacted medical marijuana laws, possibly because fewer people were driving drunk.

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Full Article: Legalizing recreational marijuana could boost crash rates, safety group warns - The Washington Post
Author: Fredrick Kunkle
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This is such an awful argument. I can smoke a joint and die in a crash in 12 hours and that's going to add to the statistics, yet not related. On top of that as they said at the end, all of the studies being done are showing dramatic drops Colorado with driving fatalities. The most upsetting about the attack on marijuana is how alcohol and tobacco just cruise on through.
 
Slanted story. They headline the IIHS "more crashes" study, barely mention that another study says it's not statistically significant and in fact uses the wrong time period, and then at the very end mention the Columbia study finding a reduction in fatailities.
And I believe these studies are being cited by AAA and have been scrutinized because they are using bias data - testing for thc was not done routinely before legalization, and likewise isn't done in many states, so part of the effect is because the correlation is now more accurately measured.
 
Slanted story. They headline the IIHS "more crashes" study, barely mention that another study says it's not statistically significant and in fact uses the wrong time period, and then at the very end mention the Columbia study finding a reduction in fatailities.
And I believe these studies are being cited by AAA and have been scrutinized because they are using bias data - testing for thc was not done routinely before legalization, and likewise isn't done in many states, so part of the effect is because the correlation is now more accurately measured.

I heard this discussed on the Joe Rogan podcast. Big surprise that special interests are once again involved in a marijuana related 'issue'.
 
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