There have been reports that some cities, including Seattle, have seen about a 10-percent decrease in drunk driving arrests since the introduction of ride-sharing services from companies like Lyft and Uber. One analyst found an especially large decrease in DUI arrests -- 18.5 percent -- among people younger than 30 in Philadelphia.
So are fewer people driving while under the influence because of the availability of more convenient transportation options? The numbers seem to suggest as much, though more studies need to be done to confirm. Uber and Lyft have welcomed news that their services may be preventing drunk driving, and recently Uber provided its own analysis of DUI arrests in Seattle. The company's blog refers to the reduction in DUIs as the "Uber effect."