Note that many of these objects have none of these properties set, so their JSON files may not even include the properties object.

isQueue : boolean

True if path surface is for a queue

noSlopeRailings : boolean

True if path has no railings on slopes

editorOnly : boolean

True if path is normally only available in the scenario editor

rct2.footpath_surface.queue_yellow (Queue (Yellow))

"properties": {
    "isQueue": true,
    "noSlopeRailings": true
}