Furthermore, in bumper to bumper traffic, you're better off staying stopped and letting the gap in front of you grow, only taking your foot off the brake and letting your engine idle move you forward at the average speed of traffic once the interval is large enough. Helps destroy traffic waves by keeping everyone moving forward slowly rather than having to constantly stop and go.

Try it some time. It takes some getting used to, but once you bust your first traffic clot, it starts to feel like a game where the objective is to keep everyone moving forward for the longest time without everyone having to stop. Completely counter-intuitive, but I'll be damned if it doesn't work.

Enjoy. The point isn't to modify the behavior of those in front of you, But to keep traffic behind you moving forward even if only slowly.