Add highway=bus_guideway (#1407)

Guided busways (or bus guideways in OSM terminology) are special roadways along which bus operators can travel smoothly at high speeds without steering. These are tagged highway=bus_guideway on OpenStreetMap.

Currently, highway=busway is surfaced in OpenMapTiles as the busway class in the transportation layer, but highway=bus_guideway is not present. These two types of roadways serve generally similar purposes, so it would make sense to have guided busways at the same zoom levels.

layers/transportation/class.sql

@@ -67,7 +67,7 @@ SELECT CASE
                 'motorway', 'trunk', 'primary', 'secondary', 'tertiary', 'raceway',
                 'motorway_construction', 'trunk_construction', 'primary_construction',
                 'secondary_construction', 'tertiary_construction', 'raceway_construction',
-                'busway'
+                'busway', 'bus_guideway'
                ) THEN TRUE --includes ramps
            ELSE FALSE
        END

layers/transportation/mapping.yaml

@@ -45,7 +45,7 @@ generalized_tables:
 # etldoc: osm_highway_linestring -> osm_highway_linestring_gen_z11
   highway_linestring_gen_z11:
     source: highway_linestring
-    sql_filter: (highway IN ('motorway', 'trunk', 'primary', 'secondary', 'tertiary', 'motorway_link', 'trunk_link', 'primary_link', 'secondary_link', 'tertiary_link', 'busway') OR highway = 'construction' AND construction IN ('motorway', 'trunk', 'primary', 'secondary', 'tertiary', 'motorway_link', 'trunk_link', 'primary_link', 'secondary_link', 'tertiary_link', 'busway')) AND NOT is_area AND ST_IsValid(geometry)
+    sql_filter: (highway IN ('motorway', 'trunk', 'primary', 'secondary', 'tertiary', 'motorway_link', 'trunk_link', 'primary_link', 'secondary_link', 'tertiary_link', 'busway', 'bus_guideway') OR highway = 'construction' AND construction IN ('motorway', 'trunk', 'primary', 'secondary', 'tertiary', 'motorway_link', 'trunk_link', 'primary_link', 'secondary_link', 'tertiary_link', 'busway', 'bus_guideway')) AND NOT is_area AND ST_IsValid(geometry)
     tolerance: ZRES12
 
 name_field: &name
@@ -238,6 +238,7 @@ tables:
       - track
       - raceway
       - busway
+      - bus_guideway
       - construction
       public_transport:
       - platform

layers/transportation/transportation.yaml

@@ -51,6 +51,8 @@ layer:
           highway: raceway
         busway:
           highway: busway
+        bus_guideway:
+          highway: bus_guideway
         motorway_construction:
           __AND__:
             highway: construction

layers/transportation/update_transportation_merge.sql

@@ -165,8 +165,8 @@ BEGIN
         layer
     FROM osm_transportation_merge_linestring_gen_z11
     WHERE (update_id IS NULL OR id = update_id)
-        AND highway NOT IN ('tertiary', 'tertiary_link', 'busway')
+        AND highway NOT IN ('tertiary', 'tertiary_link', 'busway', 'bus_guideway')
-        AND construction NOT IN ('tertiary', 'tertiary_link', 'busway')
+        AND construction NOT IN ('tertiary', 'tertiary_link', 'busway', 'bus_guideway')
     ;
 
     DELETE FROM osm_transportation_merge_linestring_gen_z9