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"suddenly" was because that's when they started existing in noticeable numbers.
by alisonkisk 5y ago
"suddenly" was because that's when they started existing in noticeable numbers.
- kube-system 5y agoNo, it's because vehicles before then were not required to meet minimum sound requirements by law. Check the spec sheets of HEV/PHEV/EV vehicles made before then -- they don't have acoustic alerting systems. Now they all do (in the jurisdictions that require it).
- CaptainMarvel 5y agoThe law didn’t exist until there were enough electric cars to care about this. The cause and effect starts with the number of quiet cars.
- kube-system 5y agoYes, but it wasn’t their mere existence that caused automakers to add noise. People who buy these vehicles like that they are quiet. The noise generators were added only because regulatory action was taken.