We all have pet peeves that other drivers do. Some of these cause other drivers to have road rage, be involved in accidents, and to have this reaction:

I think we can all agree that not using your blinker is a pretty big one.

However, the dumbest and most dangerous thing a driver can do is SLOWING DOWN WHILE THEY ARE MERGING ONTO A MAJOR INTERSTATE. *

Do they think everyone else is just going to move over for them?? Sorry, your highness, but that is not how this whole driving thing works.

They weren't kidding in driver's ed when they said that you not only have to drive for yourself but for everyone around you.

*Actually, the dumbest and most dangerous thing a driver can do is drinking and driving.
Please, I beg you, don't ever make this decision. It's not just your life it affects.

Be careful out there!