ArticleAmerican journal of epidemiology2018
Ridesharing and Motor Vehicle Crashes in 4 US Cities: An Interrupted Time-Series Analysis.
Article in American journal of epidemiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
23 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Differential impacts of ridesharing on alcohol-related crashes by socioeconomic municipalities: rate of technology adoption matters.BMC public health · 2021Pooled it
- Crash injury severity for ride-hailing drivers: a questionnaire study in China.Scientific reports · 2025Article
- Five-year trend analysis of drug use among individuals 16 years of age and older injured in non-fatal motor vehicle crashes in the US.Traffic injury prevention · 2025Article
- Effectiveness of road safety interventions: An evidence and gap map.Campbell systematic reviews · 2024Article
- Uber use after alcohol consumption among car/motorcycle drivers in ten Brazilian capitals.Revista de saude publica · 2023Article
- Alcohol-impaired driving among adults-USA, 2014-2018.Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention · 2022Article
- Ride-Hailing and Road Traffic Crashes: A Critical Review.American journal of epidemiology · 2022Review
- Does the Implementation of Ride-Hailing Services Affect Urban Road Safety? The Experience of Madrid.International journal of environmental research and public health · 2022Article
- Ride-hailing services: Competition or complement to public transport to reduce accident rates. The case of Madrid.Frontiers in psychology · 2022Article
- Rideshare Trips and Alcohol-Involved Motor Vehicle Crashes in Chicago.Journal of studies on alcohol and drugs · 2021Article
- What Are the Restraint Practices, Preferences, and Experiences When Australian Parents Travel with Their Children in a Rideshare Vehicle?International journal of environmental research and public health · 2021Article
- Ridesharing and motor vehicle crashes: a spatial ecological case-crossover study of trip-level data.Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention · 2021Article
- Article
- The effectiveness of alternative transportation programs in reducing impaired driving: A literature review and synthesis.Journal of safety research · 2020Review
- National and metropolitan trends in public transit use, transit-related walking, and ridesharing between 2009 and 2017.Journal of transport & health · 2020Article
- The unknown denominator problem in population studies of disease frequency.Spatial and spatio-temporal epidemiology · 2020Review
- Assessing the impact of a local community subsidised rideshare programme on road traffic injuries: an evaluation of the Evesham Saving Lives programme.Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention · 2020Article
- To drive or not to drive? A study of travel behavior for a recent drinking occasion.Travel behaviour & society · 2020Article
- State or market? How to effectively decrease alcohol-related crash fatalities and injuries.Journal of epidemiology and community health · 2020Article
- Article
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
Uber, the world's largest ridesharing company, has reportedly provided over 2 billion journeys globally since operations began in 2010; however, the impact on motor vehicle crashes is unclear. Theoretically, ridesharing could reduce alcohol-involved crashes in locations where other modes of transportation are less attractive than driving one's own vehicle while under the influence of alcohol. We conducted interrupted time-series analyses using weekly counts of injury crashes and the proportion that were alcohol-involved in 4 US cities (Las Vegas, Nevada; Reno, Nevada; Portland, Oregon; and San Antonio, Texas). We considered that a resumption of Uber operations after a temporary break would produce a more substantial change in ridership than an initial launch, so we selected cities where Uber launched, ceased, and then resumed operations (2013-2016). We hypothesized that Uber's resumption would be associated with fewer alcohol-involved crashes. Results partially supported this hypothesis. For example, in Portland, Uber's resumption was associated with a 61.8% reduction (95% confidence interval: 38.7, 86.4) in the alcohol-involved crash rate (an absolute decrease of 3.1 (95% confidence interval: 1.7, 4.4) alcohol-involved crashes per week); however, there was no concomitant change in all injury crashes. Relationships between ridesharing and motor vehicle crashes differ between cities over time and may depend on specific local characteristics.
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Registered trials
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