=== Non-drivable roads ===
Because of the way the routing engine works, Waze '''will''' route users to drive onto "[[
Road types/USA#Non- drivable|non-drivable]]" road types. Generally, if a path can't be driven on (e.g. Walking Trail, Pedestrian Boardwalk, Stairway, Runway/Taxiway) then it is not normally mapped. If it is mapped, it should not be connected to any roads. "Emergency and Authorized Vehicles Only" and PennDOT Service Roads are to be treated as non-drivable roads as well. You primarily see these between interstate roads and on the Turnpike. If mapped, they should not be connected to any drivable road, the road type should be set as Private Road and locked at the highest rank of the editor.
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.