and driving in Houston, Texas, back in the 1980s, you signal for a lane chance, and the person speeds up!
It seemed two-thirds of the time, the person sped up, rather than take the approach, you need to come over, sure, you can go ahead and come on over.
So, sometimes you had to start coming over anyway, and the person would back off [there has to be a better way!]
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But these days, if the person's in an SUV or large pick-up and you're coming over anyway, there's a whole new dimension of "hey, you're not going to try to bully me when I'm in a small vehicle and you're in a large vehicle."
And the driver of the SUV or large pick-up gets tired of being presumed on and taken for granted in this regard. So, it's a damn bad dynamic.
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These days, I try to take the approach, "hey, you want to be a jack, that's fine, you can go ahead and be a jack."
[and by jack, I mean jack ass!]