Please explain traffic congestion on long straight, sections of highway (sans any sort of accident or construction).
Specifically, how it seems to move in waves. How is the crawl/stop created?
Then, what allows for the sections where you can get back up to 30-40 mph (briefly, before slowing again)
Finally, what’s the “tipping point” at which all of this stops and normal speeds and traffic patterns resume (seemingly out of nowhere with the same volume of vehicles)