Do you have a dumb question that you're kind of embarrassed to ask in the main thread? Is there something you're just not sure about?
This is your opportunity to ask questions. No question too simple or too silly.
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Notes -
I use it on a need-to-know basis -- many people seem to think 'changing into the lane in front of me' == 'cutting me off' and will accelerate to prevent that; those people don't need to know.
No man -- it's easily testable. When I put the blinker on at freeway speeds, I watch the person speed up to close the gap. Obviously not everyone, but let's say solid 30-40% around here.
How much distance would you think is needed though?
There's a non-zero percentage that will accelerate when I pull into the oncoming lane to pass on a two lane road -- a fast car is helpful here.
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The problem is that you may not be a perfect judge of when someone needs to know your intention to turn. What if someone sees that your turn signal is off and thus assumes you intend to stay in your lane, so they think it's fine if they accelerate? Now you've just increased the risk of a collision if you happen to try to merge into his lane coincidentally simultaneously to his acceleration, as well as increasing the likelihood that both of you think the other guy is an asshole, doing your small part to further enshittify the driving culture wherever you live.
And lane changing wasn't even what I was thinking of when I mentioned the turn signal. I had in mind turns at intersections and going into and out of parking lots, driveways, etc.
They will be too late, because I've already accelerated and pulled in front of them. I don't, like do this randomly without looking -- drive long enough in this kind of traffic and you know exactly what that guy is up to.
If I'm turning right or left, traffic at upcoming intersections do need to know -- also roundabouts, which a lot of people miss. (annoyingly)
Traffic behind me may or may not need to know; left turns most likely, but unless you are pretty close behind me it's probably none of your business if I'm turning right.
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