Lyft, Zero Fatalities, and Essence Cannabis Dispensary are providing up to $20,000 in free ride credit on Friday, April 20.
New and existing Lyft riders can use the code 'CANNABISLV' for $4.20 off two rides from a Lyft Designated Driver on Demand.
While Nevada is one of nine states with legal recreational marijuana, it is still illegal to drive under the influence of the substance and considered an impairment that will lead to a DUI and cause traffic-related incidents.
A nationwide study over the past 25 years found that the risk of fatal crashes increased 12 percent on April 20.
"At Lyft, our main goal is and always will be the safety of our community, so we encourage everyone to include responsible rides into their planning process," said Yacob Girma, Lyft Las Vegas general manager. "Driving impaired, whether from smoking or drinking, can cost you not only tens of thousands of dollars with a DUI conviction but potentially cost you your life."