My main two (sorry, not ten):
1) Leave earlier in the morning to beat the rush hour stop-and-go traffic. Drastically fewer stops and a shorter trip time even when driving more slowly than normal.
2) Learn reference points far enough from lights so you can time them easily. There's one light I can see about a mile away when I come under a bridge: a) If it's red when I come under the bridge and there are at least five cars stopped, I go 5 mph over the limit, b) if it's red and there are no cars stopped (i.e. it just turned red), I do the speed limit, c) if it's green, I go 5 mph under the limit. Unless there's interference from other cars, I can get through on green.
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