Do you think that every or most roads have the wrong speed limit? I sure don’t.

That I understand, but as the person I replied to said that I hope you read, people intentionally go 50 in the 45.

So the grace window you mention is irrelevant; you’d be doing 51 in the 45.

But then why don’t we all shoplift packs of gum every week?

Speeding is the one law everyone agrees is fun and acceptable to break a bit, despite being more dangerous than many actual crimes.

So dumb that society collectively agreed that 35 means 40, 40 means 45, 45 means 50, etc.