Hit all the greens

"In many areas, during off-peak hours lights are synchronized so that a vehicle traveling at some particular speed almost never gets one."

1968, I figured out I could drop the girlfriend off on 4th and cruise down Sheridan at either 5mph under, or (my pref) 5mph over the limit, and hit all the greens, sometimes even the just-turned-yellows, all the way to the highway.