Plural's

[builder22]

The truck that has been flashed will wink his tail lights twice to say “thanks pal”, or some drivers will flash their hazards once or twice to say thanks.

sidelights on and off is old school ...it's a left right left right, or maybe right left left of the indicators nowadays, or whatever the speed of your stalk allows

can't remember who but think it was an instructor said using the indicators to thank for getting 'flashed in' was 'false indication' (his words, not mine) and technically an offence!

and yeah any flashing of lights in any vehicle (to me) means they're letting you go and they're not going to move...although not everyone follows that and you're left sitting there flashing the lights and the other person not moving

 

[whitecrook]

wait a minute did someone change this thread title for a laugh or has it always been wrong

 

[Jean-F]

wait a minute did someone change this thread title for a laugh or has it always been wrong

I wouldn’t bet the farm, but I was the OP, and I’m reasonably sure that I typed Plurals.

 

[Jean-F]

sidelights on and off is old school ...it's a left right left right, or maybe right left left of the indicators nowadays, or whatever the speed of your stalk allows

can't remember who but think it was an instructor said using the indicators to thank for getting 'flashed in' was 'false indication' (his words, not mine) and technically an offence!

and yeah any flashing of lights in any vehicle (to me) means they're letting you go and they're not going to move...although not everyone follows that and you're left sitting there flashing the lights and the other person not moving

No argument, I quit truck driving in the very early eighties, I’m pretty sure that it was two winks of the tail lights for thank you then, but things change so quickly, e.g. there was a time when if you saw a cop car in a lay by, you flashed other truckers and gave them a thumbs down, with the advent of speed cameras, that soon fell by the wayside.
ETA oops, pun unintended.