What Are Cannabis Impaired Driving Laws?

Cannabis impaired driving laws are designed to prevent drivers under the influence of cannabis from operating a vehicle. These laws vary by state.

cannabis impaired driving laws

Key Points of Cannabis Impaired Driving Laws

  • Most states have specific laws for driving under the influence of cannabis, including THC.
  • Some states use a per se limit for cannabis, while others use a standard field sobriety test or blood test.
  • Penalties for impaired driving can include fines, license suspension, and jail time.

Understanding Legal Limits

Legal limits for cannabis-impaired driving vary by state. For instance, Colorado has a limit of 5 ng/mL of active THC in blood.

cannabis and driving regulations

What Does a Blood Test Reveal?

A blood test can detect the presence of THC, the psychoactive compound in cannabis. However, the test does not measure impairment; it shows use.

related article

Impaired Driving vs. Drunk Driving

While drunk driving laws are based on blood alcohol concentration, cannabis impaired driving laws focus on the effect of THC on a driver's ability.

Cannabis and Driving Regulations: A Buyer's Guide for CBD Users

Preventing Impaired Driving

Stay safe by not driving under the influence of cannabis. If you've consumed cannabis, wait until it has cleared your system before driving.