In 2019 40% of San Francisco traffic fatalities are from left turns

Re:In 2019 40% of San Francisco traffic fatalities are from ... by namdnay on Monday December 06, 2021 @05:27PM (#29466529)

I guess it's more efficient, because at a four-way intersection in the north-american system there are always pedestrians and cars crossing. Whereas in the standard european system, either cars going left are stopped in a dedicated lane, or pedestrians are waiting for the cars that are going left to finish.

obviously that efficiency comes at the cost of a higher mortality :(

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Re:In 2019 40% of San Francisco traffic fatalities are from ... by chrisseaton on Monday December 06, 2021 @05:57PM (#29466835)

I would have thought the UK way was more efficient because you can cross diagonally? In the US system you have to wait for two sets of lights to cross diagonally.

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Re:In 2019 40% of San Francisco traffic fatalities are from ... by kelnos on Monday December 06, 2021 @08:01PM (#29467938)

> Whereas in the standard european system, either cars going left are stopped in a dedicated lane, or pedestrians are waiting for the cars that are going left to finish.

We have this in the US as well, but only at more-busy intersections that warrant a dedicated left-turn signal arrow. Pedestrians who could get hit by left-turning cars are given a don't-walk sign while the left arrow is green.

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