From Wazeopedia
Railroads may be mapped since some people use Waze while on the train, contributing false traffic data to the system. This false data has been known to affect drivers on adjacent roads. Railroads should be elevation -5 and locked at the highest rank of the editor, up to 5. Railroads should not be connected to any drivable road.
Airport taxiways should never be mapped.
=== Time restricted turns ===