Passed my test today, 3 minors

Spent the night in the car. One question though. I was giving it a bit through a 40 zone (I was doing about 50ish) and I went past a normal police van parked in a school entrance. It was parked at an angle to me (with the rear facing the road) and looked empty.

Probably nothing and doesn't sound like a camera van, what are the chances? Dont want 3 points already