Often traffic jams occur for no other reason than the bloody lights are causing them!!
This I cannot agree with with the conditions where I currently live, but here's a little annecdote that helps your point. I once decided to use the Kanmon tunnel between Kyusyu and Honshu instead of the usual expressway. Mostly due to the ubiquitous red light, my regular run of 10-20 minutes took hours and hours to complete.
I heard, but have not had it confirmed, that retired cops go into the traffic light business and basically have that whole deal bagged for themselves.
Does anyone know if it's true or not?
My gut reaction is that this is a wive's tale, but you never know...
Also, what do you all think of the snails pace 40kph speed limit on many of the country roads here. If you've ever actually driven at the legal speed, you've probably caused a traffic jam of your own!! LOL
Here's another little story.
Back in the day when Koko Ichibanya still had the deal where your dinner would be free if you could eat the full kilo of curry rice, some buddies and I decided to take them up on their challenge. I got pretty far, but I just couldn't finish it for the life of me.
Anyway, I was stuffed. When I drove the usual 40 minute trek home, I felt that if I drove too fast, I would have a mess in the car, so I drove the speed limit all the way. Yeah, it took a long time, but more importantly, the string of cars behind me got longer and longer. I started to feel bad for them, but not bad enough to risk speeding up!
So I did what I often saw other slow cars on the country roads do: I pulled over to the side of the road and let everyone pass me.