diff --git a/layers/transportation/layer.sql b/layers/transportation/layer.sql
index 154d075..16ccda8 100644
--- a/layers/transportation/layer.sql
+++ b/layers/transportation/layer.sql
@@ -7,7 +7,8 @@ $$ LANGUAGE SQL IMMUTABLE STRICT;
 -- etldoc:     label="<sql> layer_transportation |<z4> z4 |<z5> z5 |<z6> z6 |<z7> z7 |<z8> z8 |<z9> z9 |<z10> z10 |<z11> z11 |<z12> z12|<z13> z13|<z14_> z14+" ] ;
 CREATE OR REPLACE FUNCTION layer_transportation(bbox geometry, zoom_level int)
 RETURNS TABLE(osm_id bigint, geometry geometry, class text, subclass text,
-ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
+ramp int, oneway int, brunnel TEXT, service TEXT, layer INT, level INT,
+indoor INT) AS $$
     SELECT
         osm_id, geometry,
         CASE
@@ -28,7 +29,10 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
              THEN 1 ELSE is_ramp::int END AS ramp,
         is_oneway::int AS oneway,
         brunnel(is_bridge, is_tunnel, is_ford) AS brunnel,
-        NULLIF(service, '') AS service
+        NULLIF(service, '') AS service,
+        NULLIF(layer, 0) AS layer,
+        "level",
+        CASE WHEN indoor=TRUE THEN 1 ELSE NULL END as indoor
     FROM (
         -- etldoc: osm_transportation_merge_linestring_gen7 -> layer_transportation:z4
         SELECT
@@ -38,6 +42,7 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
             NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
             z_order
         FROM osm_transportation_merge_linestring_gen7
         WHERE zoom_level = 4
@@ -51,6 +56,7 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
             NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
             z_order
         FROM osm_transportation_merge_linestring_gen6
         WHERE zoom_level = 5
@@ -64,6 +70,7 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
             NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
             z_order
         FROM osm_transportation_merge_linestring_gen5
         WHERE zoom_level = 6
@@ -77,6 +84,7 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
             NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
             z_order
         FROM osm_transportation_merge_linestring_gen4
         WHERE zoom_level = 7
@@ -90,6 +98,7 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
             NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
             z_order
         FROM osm_transportation_merge_linestring_gen3
         WHERE zoom_level = 8
@@ -104,6 +113,7 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
             NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
             z_order
         FROM osm_highway_linestring_gen2
         WHERE zoom_level BETWEEN 9 AND 10
@@ -118,6 +128,7 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
             NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
             z_order
         FROM osm_highway_linestring_gen1
         WHERE zoom_level = 11
@@ -131,7 +142,17 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             osm_id, geometry,
             highway, NULL AS railway, NULL AS aerialway, NULL AS shipway,
             public_transport, service_value(service) AS service,
-            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, z_order
+            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway,
+            CASE WHEN highway IN ('footway', 'steps') THEN layer
+                ELSE NULL::int
+            END AS layer,
+            CASE WHEN highway IN ('footway', 'steps') THEN "level"
+                ELSE NULL::int
+            END AS "level",
+            CASE WHEN highway IN ('footway', 'steps') THEN indoor
+                ELSE NULL::boolean
+            END AS indoor,
+            z_order
         FROM osm_highway_linestring
         WHERE NOT is_area AND (
             zoom_level = 12 AND (
@@ -152,6 +173,7 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
             NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
             z_order
         FROM osm_railway_linestring_gen5
         WHERE zoom_level = 8
@@ -166,6 +188,7 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
             NULL::boolean AS is_ramp, NULL::boolean AS is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
             z_order
         FROM osm_railway_linestring_gen4
         WHERE zoom_level = 9
@@ -177,7 +200,9 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             osm_id, geometry,
             NULL AS highway, railway, NULL AS aerialway, NULL AS shipway,
             NULL AS public_transport, service_value(service) AS service,
-            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, z_order
+            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
+            z_order
         FROM osm_railway_linestring_gen3
         WHERE zoom_level = 10
             AND railway IN ('rail', 'narrow_gauge') AND service = ''
@@ -188,7 +213,9 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             osm_id, geometry,
             NULL AS highway, railway, NULL AS aerialway, NULL AS shipway,
             NULL AS public_transport, service_value(service) AS service,
-            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, z_order
+            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
+            z_order
         FROM osm_railway_linestring_gen2
         WHERE zoom_level = 11
             AND railway IN ('rail', 'narrow_gauge', 'light_rail') AND service = ''
@@ -199,7 +226,9 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             osm_id, geometry,
             NULL AS highway, railway, NULL AS aerialway, NULL AS shipway,
             NULL AS public_transport, service_value(service) AS service,
-            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, z_order
+            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
+            z_order
         FROM osm_railway_linestring_gen1
         WHERE zoom_level = 12
             AND railway IN ('rail', 'narrow_gauge', 'light_rail') AND service = ''
@@ -211,7 +240,9 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             osm_id, geometry,
             NULL AS highway, railway, NULL AS aerialway, NULL AS shipway,
             NULL AS public_transport, service_value(service) AS service,
-            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, z_order
+            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
+            z_order
         FROM osm_railway_linestring
         WHERE zoom_level = 13
                 AND railway IN ('rail', 'narrow_gauge', 'light_rail') AND service = ''
@@ -223,7 +254,9 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             osm_id, geometry,
             NULL AS highway, NULL as railway, aerialway, NULL AS shipway,
             NULL AS public_transport, service_value(service) AS service,
-            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, z_order
+            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
+            z_order
         FROM osm_aerialway_linestring_gen1
         WHERE zoom_level = 12
         UNION ALL
@@ -234,7 +267,9 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             osm_id, geometry,
             NULL AS highway, NULL as railway, aerialway, NULL AS shipway,
             NULL AS public_transport, service_value(service) AS service,
-            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, z_order
+            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
+            z_order
         FROM osm_aerialway_linestring
         WHERE zoom_level >= 13
         UNION ALL
@@ -244,7 +279,9 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             osm_id, geometry,
             NULL AS highway, NULL AS railway, NULL AS aerialway, shipway,
             NULL AS public_transport, service_value(service) AS service,
-            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, z_order
+            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
+            z_order
         FROM osm_shipway_linestring_gen2
         WHERE zoom_level = 11
         UNION ALL
@@ -254,7 +291,9 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             osm_id, geometry,
             NULL AS highway, NULL AS railway, NULL AS aerialway, shipway,
             NULL AS public_transport, service_value(service) AS service,
-            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, z_order
+            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
+            z_order
         FROM osm_shipway_linestring_gen1
         WHERE zoom_level = 12
         UNION ALL
@@ -265,7 +304,9 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             osm_id, geometry,
             NULL AS highway, NULL AS railway, NULL AS aerialway, shipway,
             NULL AS public_transport, service_value(service) AS service,
-            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, z_order
+            is_bridge, is_tunnel, is_ford, is_ramp, is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
+            z_order
         FROM osm_shipway_linestring
         WHERE zoom_level >= 13
         UNION ALL
@@ -281,7 +322,9 @@ ramp int, oneway int, brunnel TEXT, service TEXT) AS $$
             highway, NULL AS railway, NULL AS aerialway, NULL AS shipway,
             public_transport, NULL AS service,
             FALSE AS is_bridge, FALSE AS is_tunnel, FALSE AS is_ford,
-            FALSE AS is_ramp, FALSE AS is_oneway, z_order
+            FALSE AS is_ramp, FALSE AS is_oneway,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
+            z_order
         FROM osm_highway_polygon
         -- We do not want underground pedestrian areas for now
         WHERE zoom_level >= 13 AND is_area AND COALESCE(layer, 0) >= 0
diff --git a/layers/transportation/mapping.yaml b/layers/transportation/mapping.yaml
index 812a7d0..f816ee4 100644
--- a/layers/transportation/mapping.yaml
+++ b/layers/transportation/mapping.yaml
@@ -116,6 +116,14 @@ layer_field: &layer
   key: layer
   name: layer
   type: integer
+level_field: &level
+  key: level
+  name: level
+  type: integer
+indoor_field: &indoor
+  key: indoor
+  name: indoor
+  type: bool
 z_order_field: &z_order
   name: z_order
   type: wayzorder
@@ -136,6 +144,8 @@ tables:
     - *network
     - *z_order
     - *layer
+    - *level
+    - *indoor
     - *name
     - *name_en
     - *name_de
@@ -193,6 +203,8 @@ tables:
     - *network
     - *z_order
     - *layer
+    - *level
+    - *indoor
     - *name
     - *name_en
     - *name_de
@@ -287,9 +299,9 @@ tables:
       type: string
     - name: z_order
       type: wayzorder
-    - name: layer
-      key: layer
-      type: integer
+    - *layer
+    - *level
+    - *indoor
     - name: is_area
       key: area
       type: bool
diff --git a/layers/transportation/transportation.yaml b/layers/transportation/transportation.yaml
index f41dd65..c1ee7cc 100644
--- a/layers/transportation/transportation.yaml
+++ b/layers/transportation/transportation.yaml
@@ -88,10 +88,24 @@ layer:
       - driveway
       - alley
       - parking_aisle
+    level:
+      description: |
+          Experimental feature! Filled only for steps and footways. Original
+          value of [`level`](http://wiki.openstreetmap.org/wiki/Key:level) tag.
+    layer:
+      description: |
+          Experimental feature! Filled only for steps and footways. Original
+          value of [`layer`](http://wiki.openstreetmap.org/wiki/Key:layer) tag.
+    indoor:
+      description: |
+          Experimental feature! Filled only for steps and footways. Original
+          value of [`indoor`](http://wiki.openstreetmap.org/wiki/Key:indoor) tag.
+      values:
+      - 1
   datasource:
     geometry_field: geometry
     srid: 900913
-    query: (SELECT geometry, class, subclass, oneway, ramp, brunnel, service FROM layer_transportation(!bbox!, z(!scale_denominator!))) AS t
+    query: (SELECT geometry, class, subclass, oneway, ramp, brunnel, service, layer, level, indoor FROM layer_transportation(!bbox!, z(!scale_denominator!))) AS t
 schema:
   - ./class.sql
   - ./update_transportation_merge.sql
diff --git a/layers/transportation_name/layer.sql b/layers/transportation_name/layer.sql
index aca5a70..01d0c9c 100644
--- a/layers/transportation_name/layer.sql
+++ b/layers/transportation_name/layer.sql
@@ -5,7 +5,7 @@
 CREATE OR REPLACE FUNCTION layer_transportation_name(bbox geometry, zoom_level integer)
 RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text,
   name_de text, tags hstore, ref text, ref_length int, network text, class
-  text, subclass text) AS $$
+  text, subclass text, layer INT, level INT, indoor INT) AS $$
     SELECT osm_id, geometry,
       NULLIF(name, '') AS name,
       COALESCE(NULLIF(name_en, ''), name) AS name_en,
@@ -24,33 +24,64 @@ RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text,
           WHEN highway IS NOT NULL AND highway_class(highway, '') = 'path'
               THEN highway
           ELSE NULL
-      END AS subclass
+      END AS subclass,
+      NULLIF(layer, 0) AS layer,
+      "level",
+      CASE WHEN indoor=TRUE THEN 1 ELSE NULL END as indoor
     FROM (
 
         -- etldoc: osm_transportation_name_linestring_gen4 ->  layer_transportation_name:z6
-        SELECT * FROM osm_transportation_name_linestring_gen4
+        SELECT *,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor
+        FROM osm_transportation_name_linestring_gen4
         WHERE zoom_level = 6
         UNION ALL
 
         -- etldoc: osm_transportation_name_linestring_gen3 ->  layer_transportation_name:z7
-        SELECT * FROM osm_transportation_name_linestring_gen3
+        SELECT *,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor
+        FROM osm_transportation_name_linestring_gen3
         WHERE zoom_level = 7
         UNION ALL
 
         -- etldoc: osm_transportation_name_linestring_gen2 ->  layer_transportation_name:z8
-        SELECT * FROM osm_transportation_name_linestring_gen2
+        SELECT *,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor
+        FROM osm_transportation_name_linestring_gen2
         WHERE zoom_level = 8
         UNION ALL
 
         -- etldoc: osm_transportation_name_linestring_gen1 ->  layer_transportation_name:z9
         -- etldoc: osm_transportation_name_linestring_gen1 ->  layer_transportation_name:z10
         -- etldoc: osm_transportation_name_linestring_gen1 ->  layer_transportation_name:z11
-        SELECT * FROM osm_transportation_name_linestring_gen1
+        SELECT *,
+            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor
+        FROM osm_transportation_name_linestring_gen1
         WHERE zoom_level BETWEEN 9 AND 11
         UNION ALL
 
         -- etldoc: osm_transportation_name_linestring ->  layer_transportation_name:z12
-        SELECT * FROM osm_transportation_name_linestring
+        SELECT
+          geometry,
+          osm_id,
+          name,
+          name_en,
+          name_de,
+          "tags",
+          ref,
+          highway,
+          network,
+          z_order,
+          CASE WHEN highway IN ('footway', 'steps') THEN layer
+              ELSE NULL::int
+          END AS layer,
+          CASE WHEN highway IN ('footway', 'steps') THEN "level"
+              ELSE NULL::int
+          END AS "level",
+          CASE WHEN highway IN ('footway', 'steps') THEN indoor
+              ELSE NULL::boolean
+          END AS indoor
+        FROM osm_transportation_name_linestring
         WHERE zoom_level = 12
             AND LineLabel(zoom_level, COALESCE(NULLIF(name, ''), ref), geometry)
             AND highway_class(highway, '') NOT IN ('minor', 'track', 'path')
@@ -58,14 +89,54 @@ RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text,
         UNION ALL
 
         -- etldoc: osm_transportation_name_linestring ->  layer_transportation_name:z13
-        SELECT * FROM osm_transportation_name_linestring
+        SELECT
+          geometry,
+          osm_id,
+          name,
+          name_en,
+          name_de,
+          "tags",
+          ref,
+          highway,
+          network,
+          z_order,
+          CASE WHEN highway IN ('footway', 'steps') THEN layer
+              ELSE NULL::int
+          END AS layer,
+          CASE WHEN highway IN ('footway', 'steps') THEN "level"
+              ELSE NULL::int
+          END AS "level",
+          CASE WHEN highway IN ('footway', 'steps') THEN indoor
+              ELSE NULL::boolean
+          END AS indoor
+        FROM osm_transportation_name_linestring
         WHERE zoom_level = 13
             AND LineLabel(zoom_level, COALESCE(NULLIF(name, ''), ref), geometry)
             AND highway_class(highway, '') NOT IN ('track', 'path')
         UNION ALL
 
         -- etldoc: osm_transportation_name_linestring ->  layer_transportation_name:z14_
-        SELECT * FROM osm_transportation_name_linestring
+        SELECT
+          geometry,
+          osm_id,
+          name,
+          name_en,
+          name_de,
+          "tags",
+          ref,
+          highway,
+          network,
+          z_order,
+          CASE WHEN highway IN ('footway', 'steps') THEN layer
+              ELSE NULL::int
+          END AS layer,
+          CASE WHEN highway IN ('footway', 'steps') THEN "level"
+              ELSE NULL::int
+          END AS "level",
+          CASE WHEN highway IN ('footway', 'steps') THEN indoor
+              ELSE NULL::boolean
+          END AS indoor
+        FROM osm_transportation_name_linestring
         WHERE zoom_level >= 14
 
     ) AS zoom_levels
diff --git a/layers/transportation_name/transportation_name.yaml b/layers/transportation_name/transportation_name.yaml
index a418690..263032c 100644
--- a/layers/transportation_name/transportation_name.yaml
+++ b/layers/transportation_name/transportation_name.yaml
@@ -57,10 +57,24 @@ layer:
       - bridleway
       - corridor
       - platform
+    level:
+      description: |
+          Experimental feature! Filled only for steps and footways. Original
+          value of [`level`](http://wiki.openstreetmap.org/wiki/Key:level) tag.
+    layer:
+      description: |
+          Experimental feature! Filled only for steps and footways. Original
+          value of [`layer`](http://wiki.openstreetmap.org/wiki/Key:layer) tag.
+    indoor:
+      description: |
+          Experimental feature! Filled only for steps and footways. Original
+          value of [`indoor`](http://wiki.openstreetmap.org/wiki/Key:indoor) tag.
+      values:
+      - 1
   datasource:
     geometry_field: geometry
     srid: 900913
-    query: (SELECT geometry, name, name_en, name_de, {name_languages}, ref, ref_length, network::text, class::text, subclass FROM layer_transportation_name(!bbox!, z(!scale_denominator!))) AS t
+    query: (SELECT geometry, name, name_en, name_de, {name_languages}, ref, ref_length, network::text, class::text, subclass, layer, level, indoor FROM layer_transportation_name(!bbox!, z(!scale_denominator!))) AS t
 schema:
   - ./network_type.sql
   - ./update_route_member.sql
diff --git a/layers/transportation_name/update_transportation_name.sql b/layers/transportation_name/update_transportation_name.sql
index c040e00..4dc01e6 100644
--- a/layers/transportation_name/update_transportation_name.sql
+++ b/layers/transportation_name/update_transportation_name.sql
@@ -23,6 +23,9 @@ CREATE MATERIALIZED VIEW osm_transportation_name_network AS (
         else hl.ref
       end as ref,
       hl.highway,
+      hl.level,
+      hl.layer,
+      hl.indoor,
       ROW_NUMBER() OVER(PARTITION BY hl.osm_id
                                    ORDER BY rm.network_type) AS "rank",
       hl.z_order
@@ -45,6 +48,9 @@ CREATE MATERIALIZED VIEW osm_transportation_name_linestring AS (
             AS "tags",
         ref,
         highway,
+        "level",
+        layer,
+        indoor,
         network_type AS network,
         z_order
     FROM (
@@ -55,13 +61,16 @@ CREATE MATERIALIZED VIEW osm_transportation_name_linestring AS (
           name_de,
           ref,
           highway,
+          "level",
+          layer,
+          indoor,
           network_type,
           min(z_order) AS z_order
       FROM osm_transportation_name_network
       WHERE ("rank"=1 OR "rank" is null)
         AND (name <> '' OR ref <> '')
         AND NULLIF(highway, '') IS NOT NULL
-      group by name, name_en, name_de, ref, highway, network_type
+      group by name, name_en, name_de, ref, highway, "level", layer, indoor, network_type
     ) AS highway_union
 );
 CREATE INDEX IF NOT EXISTS osm_transportation_name_linestring_geometry_idx ON osm_transportation_name_linestring USING gist(geometry);