From Wazeopedia

Road names/USA

900 bytes added, 7 years ago
Parking Lot Roads
The "parking lot road" designation is also very useful for indicating segments which are driveable but undesirable for routing, such as alleyways (source: gettingthere and ircphoenix)
With the current high penalty assigned to parking lot segments, Waze will do almost anything other than routing along a parking lot segment unless there is no other path at all. Using parking lot roads for ALL roads within a parking lot is not recommended as this will cause Waze to choose a route which has the least number of parking lot segments, which means it will also choose to go against turn restrictions from main roads.
The current recommendation is to use a single parking lot segment for every location which connects to external streets and then use street type segments for all main drive segments within the parking lot itself. This reduces the penalties and Waze will choose better routes within parking lots and not go against turn restrictions. But because that single parking lot segment is there, Waze will still not route through the parking lot to get to other destinations.
===='''Service Roads'''====