What o why?

Strange or unexplained phenomena are more common than you woulda thunk.. 1. Why does the hearse (as in carrying a dead person) get priority in traffic? At least in some states...in death ahead in traffic, after all aren't they at a permanent red light? 2. What is with the term 'Red light area'? Who would actually want to visit that kind of aurora pornealis? From what I understand its more like no lights area. 3. Why do I have to tip the guy that drives a van from the parking lot to the airport but not the pilot after he flies me to a different continent? 4. What do you do with a pocket kerchief? Who the heck came up with kerchief anyway? To top it off they are made from expensive fabric and stick out like a sandwich from a coat. I mean it seems rather unbecoming if you want to unload a bunch of mucus in an emergency and you reach out to a guy with one of these cloths sticking out from his jacket and proceed to use it.