Special thanks to steven rothstein president of the perkins school for the blind watertown massachusetts for his willingness to collaborate in this study rothstein and the orientation and mobility specialists and staff provided information essential to characterizing the safety threat from quieter cars to pedestrians who are blind. Dot hs 811 496 october 2011 quieter cars and the safety of blind pedestrians phase 2 development of potential specifications for vehicle countermeasure sounds. Quieter cars and the safety of blind pedestrians phase i the national highway traffic safety administration recognizes that quieter cars such as hybrid electric vehicles in low speed operation using their electric motors may introduce a safety issue for pedestrians who are blind. Acknowledgments quieter cars and the safety of blind pedestrians phase 2 final report ii acknowledgments the authors of this report are dr aaron hastings john k pollard dr lisandra garay vega dr mary d stearns and catherine guthy of the john a volpe national transportation systems center volpe center research and innovative technology administration united. Quieter cars and the safety of blind pedestrians phase i nhtsa the first private tests sponsored by the nfb had mixed results and dubious methodology for example the tires were not checked to make sure they were uniformly new versus worn in these tests tire state was checked
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