1. It is unlawful for any person who:

(a) Is under the influence of intoxicating liquor;

(b) Has a concentration of alcohol of 0.04 or more but less than 0.08 in his or her blood or breath; or

(c) Is found by measurement within 2 hours after driving or being in actual physical control of a commercial motor vehicle to have a concentration of alcohol of 0.04 or more but less than 0.08 in his or her blood or breath,

to drive or be in actual physical control of a commercial motor vehicle on a highway or on premises to which the public has access.

2. It is unlawful for any person who:

(a) Is under the influence of a controlled substance;

(b) Is under the combined influence of intoxicating liquor and a controlled substance; or

(c) Inhales, ingests, applies or otherwise uses any chemical, poison or organic solvent, or any compound or combination of any of these, to a degree which renders the person incapable of safely driving or exercising actual physical control of a commercial motor vehicle,

to drive or be in actual physical control of a commercial motor vehicle on a highway or on premises to which the public has access. The fact that any person charged with a violation of this subsection is or has been entitled to use that drug under the laws of this State is not a defense against any charge of violating this subsection.

3. It is unlawful for any person to drive or be in actual physical control of a commercial motor 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 or urine that is equal to or greater than:

Urine Blood

Nanograms Nanograms

Prohibited substance per milliliter per milliliter

(a) Amphetamine 500 100

(b) Cocaine 150 50

(c) Cocaine metabolite 150 50

(d) Heroin 2,000 50

(e) Heroin metabolite:

(1) Morphine 2,000 50

(2) 6-monoacetyl morphine 10 10

(f) Lysergic acid diethylamide 25 10

(g) Methamphetamine 500 100

(h) Phencyclidine 25 10

4. It is unlawful for any person to drive or be in actual physical control of a commercial motor 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:

Blood

Nanograms

Prohibited substance per milliliter

(a) Marijuana (delta-9-tetrahydrocannabinol) 2

(b) Marijuana metabolite (11-OH-tetrahydrocannabinol) 5

5. If consumption is proven by a preponderance of the evidence, it is an affirmative defense under paragraph (c) of subsection 1 that the defendant consumed a sufficient quantity of alcohol after driving or being in actual physical control of the commercial motor vehicle, and before his or her blood or breath was tested, to cause the defendant to have a concentration of alcohol of 0.04 or more in his or her blood or breath. A defendant who intends to offer this defense at a trial or preliminary hearing must, not less than 14 days before the trial or hearing or at such other time as the court may direct, file and serve on the prosecuting attorney a written notice of that intent.

6. A person who violates any provision of this section may be subject to any additional penalty set forth in NRS 484B.130 or 484B.135.

7. As used in this section:

(a) “Commercial motor vehicle” means a motor vehicle or combination of motor vehicles used in commerce to transport passengers or property if the motor vehicle:

(1) Has a gross combination weight rating of 26,001 or more pounds which includes a towed unit with a gross vehicle weight rating of more than 10,000 pounds;

(2) Has a gross vehicle weight rating of 26,001 or more pounds;

(3) Is designed to transport 16 or more passengers, including the driver; or

(4) Regardless of size, is used in the transportation of materials which are considered to be hazardous for the purposes of the federal Hazardous Materials Transportation Act, 49 U.S.C. §§ 5101 et. seq., and for which the display of identifying placards is required pursuant to 49 C.F.R. Part 172, Subpart F.

(b) The phrase “concentration of alcohol of 0.04 or more but less than 0.08 in his or her blood or breath” means 0.04 gram or more but less than 0.08 gram of alcohol per 100 milliliters of the blood of a person or per 210 liters of his or her breath.

(Added to NRS by 2007, 2793; 2009, 1893; 2015, 1581; 2017, 304) — (Substituted in revision for NRS 484.379778)