Cannabis and driving in Nevada

Two different subsections, and the difference matters

NRS 484C.110 contains two separate prohibited-substance tables and they do not have the same reach. Subsection 3 sets blood and urine thresholds for amphetamine, cocaine, cocaine metabolite, heroin, morphine, 6-monoacetyl morphine, lysergic acid diethylamide, methamphetamine, and phencyclidine. Marijuana is absent from that list. It appears instead in subsection 4, under a materially narrower trigger. That placement is the whole story, and it is the part most summaries skip.

Subsection 3

Nine substances, marijuana not among them

Subsection 4

Marijuana and its 11-OH metabolite only

Why it matters

Subsection 4 has a narrower trigger

What subsection 4 actually says

The statute opens subsection 4 with its own gate: for any violation that is punishable pursuant to paragraph (c) of subsection 1 of NRS 484C.400 or NRS 484C.410, 484C.430 or 484C.440, it is unlawful for any person to drive or be in actual physical control of a vehicle on a highway or on premises to which the public has access with an amount of any of the following prohibited substances in his or her blood that is equal to or greater than: marijuana (delta-9-tetrahydrocannabinol) 2 nanograms per milliliter, marijuana metabolite (11-OH-tetrahydrocannabinol) 5 nanograms per milliliter. Those cross-references are the felony and enhanced provisions of the DUI chapter. The numbers are real, and the gate in front of them is real too.

Delta-9-THC

2 ng/mL in blood

11-OH-THC

5 ng/mL in blood

Gate

Only for violations punishable under the cited felony provisions

Sample

Blood only, no urine figure for marijuana

So what applies to an ordinary first offense

Impairment. Where the subsection 4 gate is not met, the prosecution is not relieved of proving that the driver was actually under the influence, and a blood number alone does not carry the case the way a 0.08 alcohol reading does. This is a meaningful difference from alcohol and it is the single most misreported thing about cannabis and driving in this state. It is emphatically not a license to drive after consuming. Driving impaired remains unlawful under the general provisions of the same statute, the police still make roadside observations, and an officer's account of impairment is evidence whatever your blood shows.

First or second offense

Turns on proof of impairment

What a number alone does

Does not stand in for impairment

Still unlawful

Driving while actually impaired

Why blood level is a poor proxy for being high

THC does not behave like alcohol in the body. It is fat-soluble, it clears on a curve that varies enormously between people, and detectable blood levels can persist well past any subjective effect, particularly in frequent consumers. That is the pharmacological reason a flat nanogram threshold is a contested standard for cannabis in a way it is not for alcohol, and it is part of why Nevada's structure reserves the numeric trigger for repeat and felony-level cases. None of that helps you at the roadside. The only reliable approach is not to drive after consuming.

THC solubility

Fat-soluble, unlike alcohol

Practical consequence

Blood level can outlast effect

The part that has nothing to do with blood tests

Two rules catch people out long before any test does. Nevada does not permit cannabis consumption in public, and a vehicle on a public highway is not a private residence, so consuming in the car is its own problem regardless of whether you then drive. Separately, an open or accessible container of cannabis in the passenger compartment invites a conversation you do not want to have. Buy it, keep it sealed, put it out of reach, and open it where you are lawfully allowed to consume it.

What we tell people at the counter

Plan the ride before the purchase, not after. Las Vegas has more rideshare coverage than almost any city in the country and this store sits on Decatur with a free lot, so leaving a car parked and collecting it later is genuinely easy here. Nothing on this page is legal advice, and if you are facing a charge you want a Nevada DUI lawyer rather than a dispensary. What this page can do is give you the statute as written, because the version circulating in most summaries is wrong in a way that could make you overconfident.