F) Traffic lights on some streets are timed to facilitate traffic flow at a certain speed. Goofus and Gallant
are stopped at a red light on this kind of street. When the light changes Goofus hammers the
accelerator until he exceeds the speed limit. He arrives at the first light which is still red and stops.
Gallant accelerates at a reasonable rate and never exceeds the speed limit. The second light turns green
at just the right instant so that he never needs to brake at an intersection. Goofus and Gallant continue
driving this way for three lights.