Just yesterday there was a guy in the left lane of a local hiway with a 45mph speed limit, but he's doing 30.
I signal, check my mirrors and he changes lanes at the same time I do with no signal.
I resignal for the left lane now because I'm gaining on him obviously, and when I look forward again from checking beside me there he is again right in front of me again with no signal.
I frickin yelled at him at the next light, that if he's going to be doing 15 under the speed limit the least he could do was use his damn signals.
Dipshits think they are driving safe by going 15-20 under the speed limit, but won't use their damn signals when they change lanes.
When you ride motorcycles that's fairly serious.