[zaarn]

Then don't go 3km/h over?

You do have a speedometer in your car, if it's not accurate you can get that fixed for cheap.

I never drive over the limit according to my dashboard instruments no matter how many people behind me get angry.

[boubiyeah]

it's possible yes.

Though sometimes the speed limit is very, very low and it gets annoying to have your eyes constantly on the speedometer.