What does 'ignorance of the law is no excuse' mean?

Answer:
It means that not knowing the law is not an excuse for breaking it. For example, if the speed limit is 45, and you are going 55, but did not see the sign, you are still speeding. Not seeing the sign does not excuse you.
First answer by ID1000853179. Last edit by LBrohm. Contributor trust: 140 [recommend contributor recommended]. Question popularity: 2 [recommend question].