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7 In comparison, many thousands of riders are now using standing electric scooters daily on US streets shared with millions of pedestrians and drivers. The early personal transporters by Segway, introduced in 2001, were few in number, expensive to use, restricted to tourist locations, and associated with a specific set of injuries.
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5 Availability is projected to grow rapidly, with market analysis showing that Lime was valued at $1.1 billion and its rival Bird was valued at more than $2 billion. 4 Today, several major companies, including Bird and Lime, offer dockless electric scooter services, and several other companies, including the ride-sharing companies Uber and Lyft, have recently entered the market. For example, Lime-S scooters are available in more than 60 US cities and 6 cities internationally, 3 and in April 2018, Bird Rides, Inc, announced more than 1 million completed rides. With a maximum speed of 15 mph, 2 these short-range electric vehicles consist of a narrow platform on which the rider stands with 1 foot in front of the other and a waist-high rod with handlebars for steering after kicking off initially with 1 foot, riders accelerate and brake the scooter using triggers activated with their thumbs.Ĭompanies offering standing electric scooters are rapidly expanding in the United States. The scooters are located and unlocked using a downloaded smartphone application, rides are paid for by the minute, and the ride can be ended anywhere the rider decides. 1 These scooters were immediately popular with riders, presumably due to their ease of use, convenience, and low cost. Standing electric scooters first appeared in Santa Monica, California, in September 2017, when the micromobility company Bird Rides, Inc, placed thousands of their scooters all around the city. Among 193 observed electric scooter riders in the local community in September 2018, 182 (94.3%) were not wearing a helmet. The majority of patients (234 ) were discharged home from the emergency department of the 15 admitted patients, 2 had severe injuries and were admitted to the intensive care unit. Frequent injuries included fractures (79 ), head injury (100 ), and contusions, sprains, and lacerations without fracture or head injury (69 ). Ten riders (4.4%) were documented as having worn a helmet, and 12 patients (4.8%) had either a blood alcohol level greater than 0.05% or were perceived to be intoxicated by a physician. Twenty-seven patients were younger than 18 years (10.8%). Two hundred twenty-eight (91.6%) were injured as riders and 21 (8.4%) as nonriders. Two hundred forty-nine patients (145 male mean age, 33.7 years) presented to the emergency department with injuries associated with standing electric scooter use during the study period. Role of the Funder/Sponsor: The funders had no role in the design and conduct of the study collection, management, analysis, and interpretation of the data preparation, review, or approval of the manuscript and decision to submit the manuscript for publication.ĭisclaimer: The contents do not represent the views of the US Department of Veterans Affairs or the US government. Dr Schriger’s time was supported in part by a grant from the Korein Foundation. Drs Trivedi and Liu are supported by the VA Office of Academic Affiliations through the VA/National Clinician Scholars Program. Statistical analysis: Trivedi, Antonio, Wheaton, Schriger.Īdministrative, technical, or material support: Trivedi, Schriger.Ĭonflict of Interest Disclosures: None reported.įunding/Support: Drs Trivedi and Liu were supported by the UCLA National Clinician Scholars Program at the David Geffen School of Medicine at UCLA.
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Ca designs zero limits scooter full#
Trivedi, MD, MS, National Clinician Scholar Program, University of California, Los Angeles, 1100 Glendon Ave, Ste 900, Los Angeles, CA 90024 ( Contributions : Drs Trivedi and Liu had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis.Ĭoncept and design: Trivedi, Antonio, Wheaton, Kreger, Yap, Schriger, Elmore.Īcquisition, analysis, or interpretation of data: Trivedi, Liu, Antonio, Wheaton, Kreger, Yap, Schriger.ĭrafting of the manuscript: Trivedi, Liu, Antonio, Wheaton, Kreger, Yap, Schriger.Ĭritical revision of the manuscript for important intellectual content: Trivedi, Liu, Wheaton, Kreger, Yap, Schriger, Elmore.