Ride-Hailing Hasn't Reduced Drunk Driving-Related Traffic Fatalities, Study Says – KUOW News and Information

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Lots of arguments were made for and against Austin’s Proposition 1 ahead of the May election that ultimately sent Uber and Lyft packing.

But maybe the most compelling argument was the ever-present appeal to public safety – that the number of DWI arrests had dropped by nearly a quarter since Uber and Lyft rode into town in 2013. While that local number has been thoroughly raked over the coals (and even revised by APD), a new study suggests that the national impact of ride-hailing on drunk driving has been relatively moot.

Ahead of the election, the tech community argued the absence of ride-hailing giants Uber and Lyft would jeopardize Austin’s reputation as a tech hub. Voters – and even former Mayor Lee Leffingwell – argued the City of Austin’s ballot language was confusing, and that it was destined to fail. Opponents argued Uber and Lyft were bullying Austin into supporting the measure. And Taylor Kitsch argued that ride-hailing was beautiful, like him, in an ad for Lyft.

But ride-hailing advocates leaned on the public safety argument, citing Travis County Sheriff Greg Hamilton’s suggestion that DWI arrests had dropped 23 percent in the year since Austin had legalized ride-hailing. 

Those numbers were called into question shortly before the election. But the study, published last Friday in the American Journal of Epidemiology, doesn’t deny the possibility of that. It just posits that there’s no data to back that assertion up.

The authors examined the relationship between ride-hailing rollouts in the 100 largest metros in the U.S. and the number of traffic fatalities from 2005 to 2014.

They admit that there’s limited data on the impact of ride-hailing overall. The only study examining the relationship between ride-hailing and traffic fatalities prior to this one focused only on California. And, while those researchers found a slight decrease in traffic fatalities, there were far too many variables – enforcement, socioeconomic status, income, population, etc. – to comprehensively say whether ride-hailing had a definitive impact.

The analysis published last week reached a similarly cagey conclusion, finding no aggregate impact in traffic fatalities before and after Uber and Lyft:

In summary, our results suggest that the entry of Uber services into a metropolitan area has no aggregate association with the number of traffic fatalities. Our results should provoke skepticism of broad claims regarding the citywide effects of rideshare services in reducing traffic fatalities. At least through the first 5 years after the advent of Uber’s rideshare services, this transportation revolution has not yet translated into aggregate declines in metropolitan-area traffic fatalities. 

Speaking with the Washington Post, study co-author David Kirk said, unless ride-hailing providers maintain consistent levels of growth, ride-hailing won’t be the silver bullet to lower alcohol-related traffic fatalities.

“Sure, there are over 1 million arrests for drunk driving a year in the United States… [B]ut that’s nothing compared to the number of people and the number of incidents of drunk driving,” Kirk told the Post. “In the grand scheme of the massive volume of drunk drivers on the road, it’s hard to foresee Uber making a dent, unless the growth continues like it has for several more years.”

You can read the entire published study below:

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