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A comment on In 2019 40% of San Francisco traffic fatalities are from left turns. Parent comment

Re:In 2019 40% of San Francisco traffic fatalities are from ... by Dylan16807 on Monday December 06, 2021 @09:14PM (#29468431)
If that's the correct mirror placement, then adjusting it to barely see your own car is less than five degrees off. If that's a dealbreaker than I'd say it's definitely worth the slight mirror size increase or slight magnification change to make the field of view five degrees wider.
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Re:In 2019 40% of San Francisco traffic fatalities are from ... by lmilcin on Monday December 06, 2021 @09:51PM (#29468651)
Do following exercise.

Park parallel to a road with slow traffic.

Observe cars coming from behind you as they transition from rear view mirror to side mirror to your peripheral vision.

Make your own decision on what is right or not (it is your safety anyway).

I prefer to have two small blind spots that can't fit a cyclist in either of them than one larger that can fit a small car.

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Re:In 2019 40% of San Francisco traffic fatalities are from ... by Dylan16807 on Monday December 06, 2021 @10:30PM (#29468818)
> I prefer to have two small blind spots that can't fit a cyclist in either of them than one larger that can fit a small car.

And I'd rather have only one small blind spot, while being better able to judge where things in my side mirror are relative to my car. And this wouldn't require a big change to the mirror, only a quite small one, if that diagram is accurate. Also, the field of view shouldn't be so narrow that a 4 degree tilt makes a blind spot too big (my head moves more than that all the time!).

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