abe: Is the purpose of speed limits and speeding laws to enforce a moral position on speeding?
In at least some cases, their purpose seems to be little more than lining the pockets of the relevant local authorities with the fines they collect. I've seen some roads (and I'm speaking purely about Sydney here, not sure about the rest of the world) where the limit is clearly and obviously less than what would be a safe speed. Long, straight and wide roads with no real hazards, where you actually have to concentrate on driving slow enough to keep to the limit because it seems so slow in relation to the road conditions. interestingly enough, the police often seem to show up on these roads with their radar guns....hmmmm.
In those cases I'd say that driving over the limit is not immoral, just expensive.