• It doesn’t matter what term you use — high, stoned, or wasted — never get behind the wheel after using an impairing substance.
• In every state and territory, it is illegal to drive under the influence of drugs — no exceptions.
• Whether the drug is legally obtained or not, drug-impaired driving poses a threat to everyone on the road.
• If you think driving while high from marijuana won’t affect you, you are wrong: It has been shown that marijuana can slow reaction times, impair cognitive performance, and make it more difficult for drivers to keep a steady position in their lane.
• Like drunk driving, it is essential that drug-impaired drivers refrain from driving a vehicle. It is never okay to drive while impaired by any substance — regardless of whether it was legally obtained.
• If you have used an impairing substance such as marijuana, do not drive.
• Passengers should never ride with an impaired driver. If you think a driver may be impaired, do not get in the car.

Resource: https://www.trafficsafetymarketing.gov/safety-topics/drug-impaired-driving/drive-high-get-dui/august-labor-day