Our light at the traffic signal and I have to turn right. Traffic moves at the usual slow crawl when it's our turn. Our green light, on the other hand, has a differnet sense of time. As I cross the signal, the cop puts out his hand to stop those behind me.
"Just made it!" I say.
"Yes," says my son. "There was a zoom of cars just after we crossed!"
More collective nouns here.
Adventures in Semantics 1 and 2.