The vouchers give $10 off the rides Thursday, July 3 through the early hours of Monday, July 7, and up to 1,000 free credits are available each day. They’re valid for rides that begin or end in Indianapolis or Fort Wayne between 5 p.m. and 3 a.m. on these days.

Driving under the influence of alcohol or marijuana has increased in recent years. Around 17% of teens say they’ve been a passenger of a driver who wasn’t sober, and the results can be deadly. One school is trying to educate teenagers and curb impaired driving.