Freeways & Highways
Freeways:(Lock at L4)
- Principal/National Highways with 1 or 2 digits
Name them Hwy # or Hwy ## respectively.
- Motorways (with 1 digit)
Name them Hwy #
Many National Highways and Motorways also have a common name associated with them. If this name appears on signage or is used by addresses, add the name within parentheses: Hwy #/## (Name)
Only add the street name when you are sure of the local naming. If in doubt, just use the Hwy number and add the name to the alt where you believe it should go. Local editors can update the primary name later.
- Expressways
All expressways are toll roads and are controlled by EXAT.
Name them as they are officially named.
Major Highways (Lock at L3)
Secondary Highways in Regions with 3 digits.
Name them Hwy ###
Minor Highways (Lock at L2)
Provincial and Rural Highways/Roads with 4 digit digits.
Provincial Roads just have 4 digits, name these Hwy ####.
Rural Highways/Roads have 2 Thai characters (representing the Province) followed by 4 digits. Name these RR####