Injury rates per mile of travel for electric scooters versus motor vehicles

Published:October 27, 2020DOI:



      This study determined the vehicle-miles-traveled (VMT)-based injury rate for stand-up, dockless electric rental scooters (e-scooters), and compare it with the VMT-based injury rate for motor vehicle travel.


      In this secondary analysis of existing data, the e-scooter injury rate was calculated based on e-scooter injuries presenting to an emergency department or the emergency medical services system in Austin, TX between September and November 2018. Injuries were identified by Austin Public Health through a targeted e-scooter epidemiological injury investigation; e-scooter VMT data were reported by e-scooter vendors as a condition of their city licensing. Comparative injury rates for motor vehicle travel in Texas, and specifically in Travis County were calculated using annual motor vehicle crash (MVC) injury and VMT data reported by the Texas Department of Transportation.


      There were 160 confirmed e-scooter injuries identified by the e-scooter injury investigation, with 891,121 reported miles of e-scooter travel during the study period. This produces an injury rate estimate of 180 injuries/million VMT (MVMT). The injury rates for motor vehicle travel for Texas and for Travis County were 0.9 injuries/MVMT and 1.0 injuries/MVMT, respectively.


      The observed VMT-based e-scooter injury rate was approximately 175 to 200 times higher than statewide or county specific injury rates for motor vehicle travel. These findings raise concerns about the potential higher injury rate associated with e-scooters, and highlight the need for further injury surveillance, research and prevention activities addressing this emerging transportation technology.


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        • Choron R.L.
        • Sakran J.V.
        The integration of electric scooters: useful technology or public health problem?.
        Am J Public Health. 2019; 109: 555-556
        • Trivedi T.K.
        • Liu C.
        • Antonio A.L.M.
        • et al.
        Injuries associated with standing electric scooter use.
        JAMA Netw Open. 2019; 2: e187381
        • Badeau A.
        • Carman C.
        • Newman M.
        • Steenblik J.
        • Carlson M.
        • Madsen T.
        Emergency department visits for electric scooter-related injuries after introduction of an urban rental program.
        Am J Emerg Med. 2019;
        • Bekhit M.N.Z.
        • Le Fevre J.
        • Bergin C.J.
        Regional healthcare costs and burden of injury associated with electric scooters.
        Injury. 2019;
        • English K.C.
        • Allen J.R.
        • Rix K.
        • et al.
        The characteristics of dockless electric rental scooter-related injuries in a large U.S. city.
        Traff Inj Prev. 2020; 21: 476-481
        • Liew Y.K.
        • Wee C.P.J.
        • Pek J.H.
        New peril on our roads: a retrospective study of electric scooter-related injuries.
        Singap Med J. 2019;
        • Mayhew L.J.
        • Bergin C.
        Impact of e-scooter injuries on emergency department imaging.
        J Med Imag Radiat On. 2019;
        • Schlaff C.D.
        • Sack K.D.
        • Elliott R.J.
        • Rosner M.K.
        Early experience with electric scooter injuries requiring neurosurgical evaluation in District of Columbia: a case series.
        World Neurosurg. 2019;
        • Brownson A.B.
        • Fagan P.V.
        • Dickson S.
        • Civil I.D.
        Electric scooter injuries at Auckland City Hospital.
        NZ Med J. 2019; 132: 62-72
        • Tillemann L.
        • Feasley L.
        Let’s count the ways e-scooters could save the city.
        WIRED. December 7, 2018; (Available from:)
        • Portland Bureau of Transportation
        E-scooter findings report.
        Portland Bureau of Transportation, Portland, OR2018 (Available from:)
      1. Dockless electric scooter-related injuries study. Austin Public Health, Austin, TX2019 (Available from:)
        • U.S. Census
        Annual estimates of the resident population for the United States, Regions, States, and Puerto Rico: April 1, 2010 to July 1, 2018 (NST-EST2018–01).
        (Available from:)
      2. Shared micromobility transportation data and performance hub. City of Austin Transportation Department, Austin, TX2019 (Available from:)
      3. Texas motor vehicle crash statistics – 2018. Texas Department of Transportation, Austin, TX2019 (Available from:)
      4. Roadway inventory annual reports – 2018. Texas Department of Transportation, Austin, TX2018 (Available from:)
        • Peterson T.D.
        • Jolly B.T.
        • Runge J.W.
        • Hunt R.C.
        Motor vehicle safety: current concepts and challenges for emergency physicians.
        Ann Emerg Med. 1999; 34: 384-393
        • Anonymous
        Achievements in public health, 1900-1999 motor-vehicle safety: a 20th century public health achievement.
        MMWR. 1999; 48: 369-374
        • National Highway Traffic Safety Administration
        Table 2: Persons killed or injured and fatality and injury rates per population, licensed drivers, registered vehicles, and vehicle miles traveled, 1966-2017.
        in: National safety facts annual report tables: trends (general). 2019 (Available from:) (Accessed December 3, 2019)
        • National Safety Council
        Historical fatality trends.
        (Available at:) (Accessed November 16, 2019)
        • National Highway Traffic Safety Administration
        Traffic safety facts 2017.
        U.S. Department of Transportation, Washington, DC2019
        • Beck L.F.
        • Dellinger A.M.
        • O’Neil M.E.
        Motor vehicle crash injury rates by mode of travel, United States: using exposure-based methods to quantify differences.
        Am J Epidemiol. 2007; 166: 212-218
        • Shipp E.M.
        • Trueblood A.B.
        • Perez M.
        • et al.
        Analysis of motorcycle crashes in Texas, 2010–2017.
        College Station, TX, Texas A&M Transport Institute2018
        • Emond S.D.
        • Tayoun P.
        • Bedolla J.P.
        • Camargo C.A.
        Injuries in a 1-day recreational cycling tour: bike New York.
        Ann Emerg Med. 1999; 33: 56-61
        • Yanturali S.
        • Canacik O.
        • Karsli E.
        • Suner S.
        Injury and illness among athletes during a multi-day elite cycling road race.
        Phys Sportsmed. 2015; 43: 348-354
        • Pommering T.L.
        • Manos D.C.
        • Singichetti B.
        • Brown C.R.
        • Yang J.
        Injuries and illnesses occurring on a recreational bicycle tour: the great Ohio bicycle adventure.
        Wild Environ Med. 2017; 28: 299-306