How to say 'thanks'

[ROQET]

stick one your hands up, its not overly difficult

ditto

[ChaserChris]

when they let me get infront, i just put on the 4 way flashers for 3-4 times... and they understand what i mean

Yeah trucker lingo, flash the high beams ot let someone know you are letting them in, say thanks by letting the hazards flash a couple times.

But then again waving works too haha for the simple folk