What would Miss Manners say about your driving?

Have you ever allowed another driver to merge onto the freeway?  You’re a decent and kind person–of course you have.  Do you ever find yourself getting unreasonably worked up if they don’t offer that universal two-second wave as a thank you?
There are certain unspoken rules of etiquette out on the road, and the courtesy wave is one of them.  Here’s a list of the top five rules of driving etiquette we wish were required.

Turn your brights off when you see oncoming traffic.  Blinding other drivers isn’t just rude, it’s dangerous.
Stop honking during traffic jams–especially at lights.  We promise it won’t make your commute any shorter.
Keep your volume at a reasonable level.  Hey, if you want to advertise your love for Nickelback, buy a T-shirt.
Allow other cars to merge.  The freeway is not a racetrack, and if we can promise you a courtesy wave– this should be set in stone.
Stop edging into crosswalks while pedestrians are crossing.  You’ve got important places to go and all those people are in your way.  But alas, you must remember that as long as they are on foot, they always have the right-of-way.  Always.