Ontario Highway Traffic Act

Hello,
So I turned left onto edinburgh rd S in Guelph went down the hill and there was a speed trap (tripod radar). The officer said I was doing 81 km in a 50 zone. I don't think I was going quite that fast. Anyway, I was very polite, got my license and registration out. I've never even been pulled over before. So he doesn't say much, takes the ...