A total of 11.5 million heavy trucks were registered at the end 2016 Vehicle ownership per capita in the U.S. is also the highest in the world, the U.S. Department of Energy (USDoE) reports a motorization rate of 831.9 vehicles in operation per 1000 people in 2016, or a ratio of 1:1.2 vehicles to people.According to USDoE, the rate of motorization peaked in 2007 at 844.5 vehicles per 1000 people. In terms of licensed drivers, as of 2009 the country had 1.0 vehicle for every licensed driver, and 1.87 vehicles per household. Passenger car registrations in the United States declined -11.5% in 2017 and -12.8% in 2018.As of 2016, the stock of alternative fuel vehicles in the United States included over 20 million flex-fuel cars and light trucks, the worlds second largest flexible-fuel fleet in the world after Brazil. However, actual use of ethanol fuel is significantly limited due to the lack of E85 refueling infrastructure.Regarding the electrified segment, the fleet of hybrid electric vehicles in the United States is the second largest in the world after Japan, with more than four million units sold through April 2016. Since the introduction of the Tesla Roadster electric car in 2008, cumulative sales of highway legal plug-in electric vehicles in the U.S. passed one million units in September 2018. The U.S. stock of plug-in vehicles is the second largest after China (2.21 million by September 2018).As of 2017, the countrys fleet also includes more than 160,000 natural gas vehicles, mainly transit buses and delivery fleets.
Research
While there is a lack of randomized controlled trials evaluating the use of triamterene in the treatment of Ménières disease, the typical treatment is 37.5 mg of triamterene with 25 mg of hydrochlorothiazide 1–2 capsules daily. This recommendation was given a Strength of Recommendation Taxonomy (SORT) grade of C.

References


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