Never realized how bad many drivers are at merging until I bought a RV. An awful lot of people must not have taken a driver training course. :confused2:
My twin brother and I went to highschool in separate states. My drivers ed class was real world driving, in traffic, in the city, in the small town, in sleet, rain and snow. If it was your block to go driving, you drove. I went through drivers ed in Vermont, and took the drivers test for my liscense as soon as I turned 16 in the middle of a snow storm.
My brother went through drivers ed in Florida. His total drivers ed class took place on what was called a driving range. Not the ones for golf

They literally drove in circles on a course a little bigger then a large round about. They then get handed a completion certificate to take to the tag office, where they pay a fee, hand them the certificate and they get handed license

No real world drivers test. No teaching them how to parallel park, no starting on a hill with out rolling backwards, ect.......
My point being, that some states, drivers education and training is a joke and folks get handed there drivers license.
Best city I've ever driven in, even though the traffic is bump your head ridiculous is Denver Colorado. As long as you use your turn signal, someone will ease off and let you merge without any fuss. Most other areas I've been in, it takes an act of Congress to get someone to allow you to merge onto the interstate in bumper to bumper traffic.