Okay i have had my share of traffic for a long a$$ time. It includes going to school and then work. I personally think traffic comes from the merging of traffic from the off-ramp to the freeway or VIs Versa. I think it also has a lot to do with those morons who slow down to look at accidents as if they were gonna see all kinds of blood and guts. I cant wait til we all start flying around in little spaceships to work.

 

Traffic that effects me is caused by CLOWNS who don't move out of the right lane to let people coming down the on-ramp get into the right lane.

Then, there are 4 lanes of highway on the Mass Pike and the left lane is 50mph, but the right lane for some reason is 80+ mph. It's like for the morning commute in Boston, normal driving behavior goes out the window.

 

traffic is created by those who doesnt know how to drive......
then accident happens.....

 

this link explains a lot. Just a single slow driver can stop an entire highway. a few pages long, but a VERY good read.
fluid dynamics of traffic