I found the solution to my problem Maxius roads and Real Highway are not allowed in the city limits. If you're going to override the tutorial cities like I am you need to delete all of the maxius roads and replace them with the street addon mod pieces or with Maxius Avenues. Maxius roads and Real Highway pieces can only be built on the edge of your city you cannot run them through the city or through lots. The only exception to this rule is Real Railroad pieces and Maxius railroad pieces. Maxius roads are Legacy and they will not be supported by the NAM so to make the mod work you need to start a new save of your game before you install NAM once you have the city setup delete all of the Maxius road and replace them with Streets or with Avenues all Maxius roads need to be deleted and only place at the edge of the city this way when you run the NAM roads you won't get the brown box glitch like I've been getting. Do not delete the NAM just remove the maxius road from your city and replace with Streets.
