waitaminute! i just thought of something... ya know how people always say traffic lights set for 35mph are also set for 70? that doesn't work! if, at 35, it takes 20 seconds to go from 1 light to the next, then lights set for 35 will switch to green 20 seconds after the one before it. so if you're going 70 you'll get there in 10 seconds and have to wait around.
or am i missing something blindingly obvious?
in other news, i suck. suck suck suck. i'm going to bed.