Questions on premium content "IS_SCENIC_NAME" in RDF

Is it correct that the names can be used without paying for the premium content feature, as long as there is no special „scenic“ usage done for these names?

No, Scenic Name=Yes names are premium content (as defined in the RDF reference manual on page 878) and cannot be used if not licensed to the Scenic Routes product.

When a scenic road contains valid address ranges, are the address ranges also considered premium content?

No, associated information like addresses attached the Scenic Name=Yes roads is also premium.

What is the reason for having both IS_NAME_ON_ROADSIGN = 'Y' and IS_SCENIC_NAME = 'Y' attributes on a road?

If house numbers indeed exist attached to a Scenic Name=Yes then it cannot be used without being licensed to the Scenic Routes product. If there are addresses connected to the road name being Scenic Name=No (as some roads have multiple names), then these addresses can be used (not premium content).