I was coming around a corner yesterday in a 55mph and rounding the corner there is a speed limit sign that notes the speed limit changes to 45mph. This corner is downhill as well so it seems to be a perfect location for a speed trap (which it was). I was clocked doing 61 in a 45 by laser. I was clocked what I would say to be 100ft past the speed limit sign. My question is where exactly does the speed limit change? Is it when you can see the sign, where to sign is located, is there a certain grace period past the sign you have to slow down? I'm just trying to cover all angles to argue this.