An analysis of a contingency program on designated drivers at a college bar.

The team went to a college bar on weekend nights. They asked patrons to be or ride with a designated driver.

They put up small signs and gave raffle tickets to anyone who said yes. Each ticket was a chance to win $50.

They counted how many people left as designated drivers before and after the raffle started.

The share of patrons who were or rode with a designated driver jumped from a large share to a large share.

The change happened right when the raffle began and stayed high for all six weekends.

The bar sold the same amount of drinks, so business did not drop.

Delamater et al. (1986) used a brief safety package in homes with child-welfare families. Both studies show you can fix safety issues with low-cost ABA tools in real places.

Poon (2013) cut staff injuries in a school for kids with IDD by adding antecedent and consequence systems. McConkey et al. (2010) did the same at a bar—simple prompts plus a small raffle moved behavior.

Fernandez et al. (2023) gave shelter dogs food every minute no matter what. McConkey et al. (2010) gave raffle tickets only when people chose to be safe. Both prove that well-placed contingencies work, whether the learner is a dog or a college student.

You can copy this tonight. Pick a local spot, print a sign, and bring $50 in gift cards. Track who leaves as the sober driver. You just turned a fun night out into a life-saving intervention.