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4. 4) National Federation of the Blind, ``Key stakeholders agree on measures to protect blind pedestrians from silent cars –Urge passage as part of motor vehicle safety act,'' https://nfb.org/node/1056 (referred 2014-05-20).
5. 5) National Highway Traffic Safety Administration, ``Incidence of pedestrian and bycyclist crashes by hybrid electric passenger vehicles,'' DOT-HS-811-204 (2009).