Which NHTSA study? This one that was posted upthread?
https://crashstats.nhtsa.dot.gov/Api/Public/ViewPublication/812124
If so, I see that auto/pedestrian accidents are a real problem and that people have been killed or injured as a result of these encounters. I see a very thorough analysis of the types of conditions, situations, vehicles, impairments, locations, etc. that are have contributed to or have been more prone to result in these types of accidents. I see recommendations for what pedestrians and drivers should do to reduce the likelihood of these accidents. Maybe I missed it, but I didn't see any mention in that study of hybrid/electric cars (or quiet cars of any ilk) being one of the contributing factors.
If I did miss it, please point out where it talks about this. And if you're referring to a different NTHSA study that does show this, please post a link to it. Thanks.