The speed limits for urban interstate highways, U. S. Federal routes, and rural state highways are __ mph or as posted.

55

Explanation:

Speed limits are usually put on roads so as to deter road users from overspending . This is because in the case of any accident speed at a normal rate will help prevent a large destructive impact associated with collisions between vehicles.

The speed limits for urban interstate highways, U.S. Federal routes, and rural state highways are 55 mph( miles per hour) or as posted and offenders are usually punished according to the law.

south, because if you took a map you would see texas is directly in the middle of east and west, but it is also downwards towards mexico, therefore it is south