Hacker News new | ask | show | jobs
by hengheng 1670 days ago
Is that saying thanks? I thought they were just fumbling with the blinker control.
2 comments

It's saying thanks as a response to the slower truck flashing its high beams to let the faster truck know it's now safe to move back over to the slower lane.
yes, that's saying thanks. It's equivalent to the hazard lights, but in some vehicles the hazard lights button isn't very accessible.