Marijuana blood limit — Nevada Permit Test
Marijuana blood limit on the Nevada permit test — 2 rules, each with the reason behind it and a question on it while it is fresh.
The rules
Even with marijuana legal in Nevada, it is unlawful to drive with more than 2 nanograms of marijuana per milliliter of blood.
A high driver reacts late to brake lights and drifts across lanes, even when feeling fine.
With the legalization of marijuana in Nevada, it is still 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 marijuana or in their system greater than two nanograms per milliliter of blood (five nanograms per milliliter of blood for marijuana metabolite).
It is unlawful to drive with more than 5 nanograms of marijuana metabolite per milliliter of blood.
What stays in the blood after use can still mean a slow, unsafe driver on a busy road.
With the legalization of marijuana in Nevada, it is still 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 marijuana or in their system greater than two nanograms per milliliter of blood (five nanograms per milliliter of blood for marijuana metabolite).
On the test
Above what level of marijuana in the blood is it unlawful to drive in Nevada?
Two nanograms per milliliter. A high driver reacts late to brake lights and drifts across lanes, even when feeling fine. Nevada Driver Handbook, p.79: “With the legalization of marijuana in Nevada, it is still 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 marijuana or in their system greater than two nanograms per milliliter of blood (five nanograms per milliliter of blood for marijuana metabolite).”
How this works
Most practice tests hand you a bank of questions and leave the manual somewhere else. This one puts them together.
You read one law and the reason behind it, then answer a question on that law while it is still fresh. Get it right and you move on; get it wrong and you have found the gap while it is cheap to fix, not on the morning of the exam.
Learning one rule at a time, and proving it immediately, is what turns a manual you skimmed into something you actually know — and it makes studying feel like getting somewhere rather than like waiting to find out.
What it costs
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Where these come from
Every rule here is checked against Nevada Driver Handbook, published by the Nevada Department of Motor Vehicles, and against the state code itself. Last checked 2026-10-04.
- src/assets/drivers-manuals/NV.pdf (Nevada Driver Handbook, DMV 700, March 2024, Nevada Department of Motor Vehicles, retrieved 2026-09-14 and re-checked 2026-10-04; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/NV.pages.txt (plain pdftotext, the fixture every citation here was cut from and verified against; sha256 pinned in SOURCES.json)
- src/assets/drivers-manuals/NV-exam.html (Nevada DMV, Written Knowledge Test page, https://dmv.nv.gov/wtestteens.htm, read 2026-10-04; states both exam figures; sha256 pinned under examSource)
- https://dmv.nv.gov/dlhandbook.htm (read 2026-10-04; links the handbook)