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Too Stoned to Drive?
Reason magazine ^ | November 2013 | Jacob Sullum

Posted on 10/20/2013 8:06:13 AM PDT by Second Amendment First

In May, anticipating an increase in marijuana consumption now that the plant is legal for general use in Colorado, the state legislature officially defined "too stoned to drive." The new law allows juries to convict someone of driving under the influence of a drug (DUID) based on nothing more than a test indicating a THC level of at least five nanograms per milliliter of blood.

Addy Norton is a walking (and driving) refutation of that standard. Norton, a 27-year-old who smokes medical marijuana every day, recently participated in an experiment conducted by KIRO, the CBS station in Seattle, where a five-nanogram rule also prevails as a result of I-502, Washington's marijuana legalization initiative. Norton arrived with a THC level of 16 nanograms, more than three times Colorado's new DUID cutoff, but nevertheless completed a driving course satisfactorily, according to the instructor who accompanied her with his foot hovering over a second brake and his hand ready to take the wheel.

After Norton smoked three-tenths of a gram, she tested at 36.7 nanograms, more than seven times the legal limit, but still drove OK. Even after she consumed nine-tenths of a gram, a drug recognition expert from the Thurston County Sheriff's Office said her driving was merely "borderline." Only after consuming a total of 1.4 grams of pot and achieving a THC level of 58.8 nanograms, almost 12 times the legal limit, was Norton clearly too stoned to drive.

The two other participants in KIRO's study, a weekend smoker and an occasional smoker, also drove competently at THC levels far above five nanograms. So did "Justin," a medical marijuana user who volunteered for a study sponsored by KDVR, the Fox affiliate in Denver. Justin's THC level was already 21 nanograms when he arrived, even though he had not consumed any marijuana that day, and it rose to 47 after he smoked some pot. He performed fine on a driving simulator at both levels. "Justin is doing pretty well," a drug recognition expert from the Thornton, Colorado, police department said as he watched the second test. "He's being a safe driver. It's doubtful that I would have pulled him over. He hasn't shown any degree of impairment."

While some people may be noticeably impaired at five nanograms, it is clear that some people are not. The way people react to marijuana is partly a function of pre-existing characteristics, but it also depends on experience. Regular users develop tolerance and learn to adapt to marijuana's effects, so they may be able to drive safely at THC levels that would incapacitate novices.

Because THC is absorbed by fatty tissue, it can linger in the blood of regular users long after the drug's effects have worn off, meaning that daily smokers may never fall below the five-nanogram threshold. "Patients like me," Teri Robnett of the Cannabis Patient Action Network told Colorado legislators in April, "will continually maintain a blood level far above five nanograms and without any impairment." A five-nanogram standard exposes people like Robnett to the risk of being treated as a public menace whenever they get behind the wheel.

Recognizing that a five-nanogram THC level is not a good indicator of impairment, the Colorado General Assembly rejected that standard five times before finally approving it in May, the same week it passed a law regulating pot stores. "It's an arbitrary limit by uninformed people," complains Kayvan Khalatbari, co-owner of a medical marijuana center in Denver. "They just don't know what they're talking about."

The inclusion of a five-nanogram standard in I-502, the Washington initiative, was so controversial that it turned some legalization advocates against the measure. Alison Holcomb, who oversaw the I-502 campaign, points out that police still need "reasonable suspicion" that a driver is impaired to pull him over and seek a blood test. Holcomb says pro-legalization critics of I-502 were never able to cite cases where drivers who tested above five nanograms were acquitted under the old legal standard, which as in Colorado required evidence of impairment, including but not limited to blood tests. She also argues that a five-nanogram standard could help defendants with lower levels who otherwise might have been convicted. She says jurors "might be skeptical that the person was actually impaired if the results were not at that threshold level."

In a concession to critics of the five-nanogram cutoff, Colorado's new law, unlike Washington's, does not make people automatically guilty of DUID if they test above that level. Instead it creates a presumption that defendants can try to rebut by presenting evidence that they were not in fact impaired. But Denver attorney Rob Corry, who frequently represents DUID defendants, thinks that opportunity will not make much difference in practice. With a "permissible inference" of DUID at five nanograms, he says, "A person coming into court is guilty until proven innocent. If you put a number on it, juries are going to latch onto that five-nanogram number, whether it's a permissible inference or a per se [standard], and the effect will be that innocent people are convicted."


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As with alcohol, setting arbitrary limits for impairment is a political rather than practical idea. I know people who can safely operate a vehicle at twice the legal limit for booze and others who I am afraid to ride with who are stone cold sober. The ones I fear most are those with their cell phones that I see everyday crossing lines and totally distracted. A close second is those talking with their passengers while gesturing and looking at them. Some people are just unsafe drivers period.
1 posted on 10/20/2013 8:06:13 AM PDT by Second Amendment First
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To: Second Amendment First

What’s the difference between a drunk driver and a stoned driver?

The drunk driver will blow right past a stop sign.
The stoned driver will wait for it to turn green.

;^)


2 posted on 10/20/2013 8:13:59 AM PDT by elcid1970 ("In the modern world, Muslims are living fossils.")
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To: Second Amendment First


3 posted on 10/20/2013 8:14:16 AM PDT by P.O.E. (Pray for America)
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To: Second Amendment First

Anybody who didn’t see this coming is an idiot.


4 posted on 10/20/2013 8:15:09 AM PDT by cripplecreek (REMEMBER THE RIVER RAISIN!)
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To: elcid1970
The stoned driver will wait for it to turn green.

Hey...I resemble that remark...about 35 years ago...

5 posted on 10/20/2013 8:16:03 AM PDT by Popman (Liberal wars are about killing people for humanitarian reasons...)
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To: cripplecreek

Exactly!


6 posted on 10/20/2013 8:17:55 AM PDT by Second Amendment First
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To: Second Amendment First

I’ve always felt that decriminalization was the wiser route.

With legalization come new laws and taxes.


7 posted on 10/20/2013 8:21:07 AM PDT by cripplecreek (REMEMBER THE RIVER RAISIN!)
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To: cripplecreek

And lobbyists of all stripes.


8 posted on 10/20/2013 8:22:29 AM PDT by Second Amendment First
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To: Second Amendment First

wha?


9 posted on 10/20/2013 8:23:44 AM PDT by Berlin_Freeper
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To: Second Amendment First
Some people are just unsafe drivers period.

My now passed uncle always claimed the most dangerous animal on the planet was a 16-24 year old female with a driver's license.

10 posted on 10/20/2013 8:23:55 AM PDT by bigheadfred
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To: bigheadfred

And a cell phone I would now add.


11 posted on 10/20/2013 8:29:15 AM PDT by Second Amendment First
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To: bigheadfred
My now passed uncle always claimed the most dangerous animal on the planet was a 16-24 year old female with a driver's license.

After many years riding a motorcycle, little blonde girls in little red cars can still make the hair on the back of my neck stand up.

12 posted on 10/20/2013 8:29:16 AM PDT by tacticalogic ("Oh, bother!" said Pooh, as he chambered his last round.)
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To: Second Amendment First

I’m curious. What conditions warrant medical marijuana use at age 27? How does one get medical marijuana “status”?


13 posted on 10/20/2013 8:46:53 AM PDT by Artie (We are surrounded by MORONS)
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To: Artie

“How does one get medical marijuana “status”?”

Pay a doctor $100 and claim some unexplained pain that is helped by staying stoned all the time. 99.9% of all the medical marijuana cards are issued to stoners with no medical problems at all.


14 posted on 10/20/2013 8:58:17 AM PDT by Beagle8U (Free Republic -- One stop shopping ....... It's the Conservative Super WalMart for news .)
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To: bigheadfred

Well, article is poppycock because it all has to do with the strain of Marijuana.

All Marijuana highs are not the same. There is stuff that one big hit will velcro you to the couch. Then there is stuff you smoke and end up vacuuming your entire house 6 times.

Stoned people don’t carry guns. A stoned person would laugh at you before pulling a gun — even while you are beating on them.

Stoned people and 80 year old’s drive the same. 35 mph everywhere, unless its a 25 mph zone, in which case they go 15. They hug the right shoulder and don’t realize they’re left turn signal has been on for the past 80 miles. They fall asleep at red lights and have difficulty parallel parking, diagonal parking, vertical parking and horizontal parking.

And if you see smoke coming from under their care it’s because they left the parking break on.


15 posted on 10/20/2013 9:09:42 AM PDT by Usagi_yo
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To: bigheadfred

My now passed uncle always claimed the most dangerous animal on the planet was a 16-24 year old female with a driver’s license.

My Father, God keep him, used to tell me that the most dangerous person behind the wheel was an old man in a hat. Then he proved by becoming that old man.


16 posted on 10/20/2013 9:13:06 AM PDT by Mastador1 (I'll take a bad dog over a good politician any day!)
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To: Artie; Beagle8U

AIDS (HIV) & AIDS Wasting
Alzheimer’s Disease
Arthritis
Asthma / Breathing Disorders
Crohn’s / Gastrointestinal Disorders
Epilepsy / Seizures
Glaucoma
Hepatitis C
Migraines
Multiple Sclerosis / Muscle Spasms
Nausea / Chemotherapy
Pain / Analgesia
Psychological Conditions
Tourette’s Syndrome
Terminally Ill
Basically get a prescription from a doctor.

My oldest sister has suffered with severe asthma since childhood. Our family doctor gave her marijuana as a child, which my father rolled into cigarettes for her. This was in the mid-forties. My sister remembered it when, as a teacher, the police burned some weed so they would recognize the odor.

Beagle, do you have a source for your 99.9%?


17 posted on 10/20/2013 9:13:35 AM PDT by Second Amendment First
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To: tacticalogic

After many years riding a motorcycle, little blonde girls in little red cars can still make the hair on the back of my neck stand up.

I had to read that twice!


18 posted on 10/20/2013 9:14:26 AM PDT by Mastador1 (I'll take a bad dog over a good politician any day!)
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To: elcid1970

The cop will pull the guy on LSD over. The guy will ask, “How fast was I going officer?” The cop will say, “ 6 miles an hour. Get out of the car.”


19 posted on 10/20/2013 9:17:32 AM PDT by bmwcyle (People who do not study history are destine to believe really ignorant statements.)
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To: Second Amendment First
driving under the influence of a drug (DUID)

Pronounced "duuude!".

20 posted on 10/20/2013 9:17:32 AM PDT by Moltke (Sapere aude!)
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