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

Re:In 2019 40% of San Francisco traffic fatalities are from ... by echelon on Monday December 06, 2021 @04:41PM (#29466084)

> Note that whether you have a solid green or a green arrow matters. A solid green means you can turn left, but you might have cross traffic. A green arrow means you're protected and as long as other people are obeying traffic signals, you shouldn't run into other people.

This is the same in the southeast, and I assume the rest of the US.

Recently "flashing yellow" [1,2,3] has been introduced to mean left turns must yield to right of way traffic. These are gradually replacing solid green signals.

[1] https://www.txdot.gov/driver/signs-and-signals/flashing-yell...

[2] https://durhamnc.gov/1140/Flashing-Left-Turn-Arrow-Informati...

[3] https://www.penndot.gov/TravelInPA/TrafficSignalsManagement/... (PDF)

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Re:In 2019 40% of San Francisco traffic fatalities are from ... by GatorD42 on Monday December 06, 2021 @05:09PM (#29466336)

This is confusing, generally a blinking yellow when going straight means slow down but you have right of way. A blinking left yellow would be different from a normal blinking yellow.

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Re:In 2019 40% of San Francisco traffic fatalities are from ... by throwaway0a5e on Monday December 06, 2021 @06:00PM (#29466881)

Yeah, it should probably be a blinking red arrow in order to be consistent. I'm sure some committee decided that wasn't different enough from normal red arrow

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Re:In 2019 40% of San Francisco traffic fatalities are from ... by lttlrck on Monday December 06, 2021 @08:05PM (#29467961)

isn't flashing red a fail-safe triggered when the light controls fail that should be treated as a stop sign?

In practice that might work, but it's also a conflicting signal.

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Re:In 2019 40% of San Francisco traffic fatalities are from ... by sokoloff on Monday December 06, 2021 @08:33PM (#29468174)

Blinking red would be a stop and proceed when safe sign. There’s no reason for each car to stop for a lot of these unprotected left turns.

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