* Official protected highways use a marker at each tile corner which will protect all 4 tiles around them. These markers are called [[Catseye|Catseyes]] and [[Waystone|Waystones]]. Official highways are used by wagoners to transport goods as well as for general transportation purposes.
* Slope for a highway must not exceed 20 straight or 14/14 diagonally
*For additional information and troubleshooting topics on adding to existing highways, see [https://docs.google.com/document/d/1enAogVQhXsDvKrOT0DCna5zWh-z4RCsN9ABxMnDSmjw].