When I looked up those Google hits, my suspicions were confirmed: I had guessed at least one of them would say too late.
Lateness is something that implies tardiness. You can be late for an appointment, for example. You can also arrive too late to catch a train.
Traffic lights are not like appointments, though, or scheduled transportation. (You don't miss the seven o'clock green light, for example.) That's why I would probably not use late in conjunction with a traffic signal, unless I said something in a very specialized context, like:
I thought we might make that green light, but we were a bit too late getting to the intersection.
Moreover, a sentence like that is very unlikely to make it into writing. Missing a traffic light is something very temporary, and I'm unlikely to write more about it if I am writing later in the day. (This might help explain the very low number of hits.)
The word I think you'll find more often is miss: as in, we missed the green light.