1. I agree, I clearly misunderstood the direction tagging for signs.
2. I see. In that case I will keep the stops directly on the ways.
3. In this case, I was tagging the signs ars real-life objects. I added speed limits to roads whenever I can, but I'm this case I was unable to survey the whole road.
4. My bad, I was tagging through Vespucci and I didn't really notice that forward and backward require separate speed limits.

Thank you. I appreciate the thorough review.