to expand on number 5, drive the flow speed! If traffic is moving at 55, yeah that sucks but you're not going to make up more than a minute or so by speeding through them. And if traffic is doing 75, don't do 55 unless you're desperately low on gas. The savings from not maneuvering so much are huge. (Unless you're driving EVs, they have constant power instead of gears and RPMs. Which is why they should be far more clearly marked.)