diff --git a/layers/transportation/class.sql b/layers/transportation/class.sql
index 3c632f4..187b5f8 100644
--- a/layers/transportation/class.sql
+++ b/layers/transportation/class.sql
@@ -9,7 +9,7 @@ $$ LANGUAGE SQL IMMUTABLE STRICT;
 
 -- The classes for highways are derived from the classes used in ClearTables
 -- https://github.com/ClearTables/ClearTables/blob/master/transportation.lua
-CREATE OR REPLACE FUNCTION highway_class(highway TEXT, public_transport TEXT) RETURNS TEXT AS $$
+CREATE OR REPLACE FUNCTION highway_class(highway TEXT, public_transport TEXT, construction TEXT) RETURNS TEXT AS $$
     SELECT CASE
         WHEN highway IN ('motorway', 'motorway_link') THEN 'motorway'
         WHEN highway IN ('trunk', 'trunk_link') THEN 'trunk'
@@ -17,9 +17,19 @@ CREATE OR REPLACE FUNCTION highway_class(highway TEXT, public_transport TEXT) RE
         WHEN highway IN ('secondary', 'secondary_link') THEN 'secondary'
         WHEN highway IN ('tertiary', 'tertiary_link') THEN 'tertiary'
         WHEN highway IN ('unclassified', 'residential', 'living_street', 'road') THEN 'minor'
-        WHEN highway IN ('service', 'track') THEN highway
         WHEN highway IN ('pedestrian', 'path', 'footway', 'cycleway', 'steps', 'bridleway', 'corridor') OR public_transport IN ('platform') THEN 'path'
-        WHEN highway = 'raceway' THEN 'raceway'
+        WHEN highway IN ('service', 'track', 'raceway') THEN highway
+        WHEN highway = 'construction' THEN CASE
+          WHEN construction IN ('motorway', 'motorway_link') THEN 'motorway_construction'
+          WHEN construction IN ('trunk', 'trunk_link') THEN 'trunk_construction'
+          WHEN construction IN ('primary', 'primary_link') THEN 'primary_construction'
+          WHEN construction IN ('secondary', 'secondary_link') THEN 'secondary_construction'
+          WHEN construction IN ('tertiary', 'tertiary_link') THEN 'tertiary_construction'
+          WHEN construction = '' OR construction IN ('unclassified', 'residential', 'living_street', 'road') THEN 'minor_construction'
+          WHEN construction IN ('pedestrian', 'path', 'footway', 'cycleway', 'steps', 'bridleway', 'corridor') OR public_transport IN ('platform') THEN 'path_construction'
+          WHEN construction IN ('service', 'track', 'raceway') THEN CONCAT(highway, '_construction')
+          ELSE NULL
+        END
         ELSE NULL
     END;
 $$ LANGUAGE SQL IMMUTABLE;
diff --git a/layers/transportation/layer.sql b/layers/transportation/layer.sql
index 651ea5b..9868768 100644
--- a/layers/transportation/layer.sql
+++ b/layers/transportation/layer.sql
@@ -12,7 +12,7 @@ indoor INT, surface TEXT) AS $$
     SELECT
         osm_id, geometry,
         CASE
-            WHEN NULLIF(highway, '') IS NOT NULL OR NULLIF(public_transport, '') IS NOT NULL THEN highway_class(highway, public_transport)
+            WHEN NULLIF(highway, '') IS NOT NULL OR NULLIF(public_transport, '') IS NOT NULL THEN highway_class(highway, public_transport, construction)
             WHEN NULLIF(railway, '') IS NOT NULL THEN railway_class(railway)
             WHEN NULLIF(aerialway, '') IS NOT NULL THEN aerialway
             WHEN NULLIF(shipway, '') IS NOT NULL THEN shipway
@@ -21,7 +21,7 @@ indoor INT, surface TEXT) AS $$
         CASE
             WHEN railway IS NOT NULL THEN railway
             WHEN (highway IS NOT NULL OR public_transport IS NOT NULL)
-                AND highway_class(highway, public_transport) = 'path'
+                AND highway_class(highway, public_transport, construction) = 'path'
                 THEN COALESCE(NULLIF(public_transport, ''), highway)
             ELSE NULL
         END AS subclass,
@@ -39,13 +39,13 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_transportation_merge_linestring_gen7 -> layer_transportation:z4
         SELECT
             osm_id, geometry,
-            highway, NULL AS railway, NULL AS aerialway, NULL AS shipway,
+            highway, construction, NULL AS railway, NULL AS aerialway, NULL AS shipway,
             NULL AS public_transport, NULL AS service,
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
             NULL::boolean AS is_ramp, NULL::int AS is_oneway, NULL as man_made,
             NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
-	    NULL AS surface,
+	          NULL AS surface,
             z_order
         FROM osm_transportation_merge_linestring_gen7
         WHERE zoom_level = 4
@@ -54,7 +54,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_transportation_merge_linestring_gen6 -> layer_transportation:z5
         SELECT
             osm_id, geometry,
-            highway, NULL AS railway, NULL AS aerialway, NULL AS shipway,
+            highway, construction, NULL AS railway, NULL AS aerialway, NULL AS shipway,
             NULL AS public_transport, NULL AS service,
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
@@ -68,7 +68,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_transportation_merge_linestring_gen5 -> layer_transportation:z6
         SELECT
             osm_id, geometry,
-            highway, NULL AS railway, NULL AS aerialway, NULL AS shipway,
+            highway, construction, NULL AS railway, NULL AS aerialway, NULL AS shipway,
             NULL AS public_transport, NULL AS service,
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
@@ -82,7 +82,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_transportation_merge_linestring_gen4  ->  layer_transportation:z7
         SELECT
             osm_id, geometry,
-            highway, NULL AS railway, NULL AS aerialway, NULL AS shipway,
+            highway, construction, NULL AS railway, NULL AS aerialway, NULL AS shipway,
             NULL AS public_transport, NULL AS service,
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
@@ -96,7 +96,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_transportation_merge_linestring_gen3  ->  layer_transportation:z8
         SELECT
             osm_id, geometry,
-            highway, NULL AS railway, NULL AS aerialway, NULL AS shipway,
+            highway, construction, NULL AS railway, NULL AS aerialway, NULL AS shipway,
             NULL AS public_transport, NULL AS service,
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
@@ -111,7 +111,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_highway_linestring_gen2  ->  layer_transportation:z10
         SELECT
             osm_id, geometry,
-            highway, NULL AS railway, NULL AS aerialway, NULL AS shipway,
+            highway, construction, NULL AS railway, NULL AS aerialway, NULL AS shipway,
             NULL AS public_transport, NULL AS service,
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
@@ -126,7 +126,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_highway_linestring_gen1  ->  layer_transportation:z11
         SELECT
             osm_id, geometry,
-            highway, NULL AS railway, NULL AS aerialway, NULL AS shipway,
+            highway, construction, NULL AS railway, NULL AS aerialway, NULL AS shipway,
             NULL AS public_transport, NULL AS service,
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
@@ -143,7 +143,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_highway_linestring       ->  layer_transportation:z14_
         SELECT
             osm_id, geometry,
-            highway, NULL AS railway, NULL AS aerialway, NULL AS shipway,
+            highway, construction, NULL AS railway, NULL AS aerialway, NULL AS shipway,
             public_transport, service_value(service) AS service,
             is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, man_made,
             layer,
@@ -158,12 +158,12 @@ indoor INT, surface TEXT) AS $$
         FROM osm_highway_linestring
         WHERE NOT is_area AND (
             zoom_level = 12 AND (
-                highway_class(highway, public_transport) NOT IN ('track', 'path', 'minor')
+                highway_class(highway, public_transport, construction) NOT IN ('track', 'path', 'minor')
                 OR highway IN ('unclassified', 'residential')
             ) AND man_made <> 'pier'
             OR zoom_level = 13
                 AND (
-                    highway_class(highway, public_transport) NOT IN ('track', 'path') AND man_made <> 'pier'
+                    highway_class(highway, public_transport, construction) NOT IN ('track', 'path') AND man_made <> 'pier'
                 OR
                     man_made = 'pier' AND NOT ST_IsClosed(geometry)
                 )
@@ -179,7 +179,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_railway_linestring_gen5  ->  layer_transportation:z8
         SELECT
             osm_id, geometry,
-            NULL AS highway, railway, NULL AS aerialway, NULL AS shipway,
+            NULL AS highway, NULL AS construction, railway, NULL AS aerialway, NULL AS shipway,
             NULL AS public_transport, service_value(service) AS service,
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
@@ -194,7 +194,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_railway_linestring_gen4  ->  layer_transportation:z9
         SELECT
             osm_id, geometry,
-            NULL AS highway, railway, NULL AS aerialway, NULL AS shipway,
+            NULL AS highway, NULL AS construction, railway, NULL AS aerialway, NULL AS shipway,
             NULL AS public_transport, service_value(service) AS service,
             NULL::boolean AS is_bridge, NULL::boolean AS is_tunnel,
             NULL::boolean AS is_ford,
@@ -209,7 +209,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_railway_linestring_gen3  ->  layer_transportation:z10
         SELECT
             osm_id, geometry,
-            NULL AS highway, railway, NULL AS aerialway, NULL AS shipway,
+            NULL AS highway, NULL AS construction, railway, NULL AS aerialway, NULL AS shipway,
             NULL AS public_transport, service_value(service) AS service,
             is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, NULL as man_made,
             layer, NULL::int AS level, NULL::boolean AS indoor,
@@ -222,7 +222,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_railway_linestring_gen2  ->  layer_transportation:z11
         SELECT
             osm_id, geometry,
-            NULL AS highway, railway, NULL AS aerialway, NULL AS shipway,
+            NULL AS highway, NULL AS construction, 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, NULL as man_made,
             layer, NULL::int AS level, NULL::boolean AS indoor,
@@ -235,7 +235,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_railway_linestring_gen1  ->  layer_transportation:z12
         SELECT
             osm_id, geometry,
-            NULL AS highway, railway, NULL AS aerialway, NULL AS shipway,
+            NULL AS highway, NULL AS construction, railway, NULL AS aerialway, NULL AS shipway,
             NULL AS public_transport, service_value(service) AS service,
             is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, NULL as man_made,
             layer, NULL::int AS level, NULL::boolean AS indoor,
@@ -249,7 +249,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_railway_linestring       ->  layer_transportation:z14_
         SELECT
             osm_id, geometry,
-            NULL AS highway, railway, NULL AS aerialway, NULL AS shipway,
+            NULL AS highway, NULL AS construction, 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, NULL as man_made,
             layer, NULL::int AS level, NULL::boolean AS indoor,
@@ -263,7 +263,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_aerialway_linestring_gen1  ->  layer_transportation:z12
         SELECT
             osm_id, geometry,
-            NULL AS highway, NULL as railway, aerialway, NULL AS shipway,
+            NULL AS highway, NULL AS construction, NULL as railway, aerialway, NULL AS shipway,
             NULL AS public_transport, service_value(service) AS service,
             is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, NULL as man_made,
             layer, NULL::int AS level, NULL::boolean AS indoor,
@@ -276,7 +276,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_aerialway_linestring       ->  layer_transportation:z14_
         SELECT
             osm_id, geometry,
-            NULL AS highway, NULL as railway, aerialway, NULL AS shipway,
+            NULL AS highway, NULL AS construction, 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, NULL as man_made,
             layer, NULL::int AS level, NULL::boolean AS indoor,
@@ -288,7 +288,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_shipway_linestring_gen2  ->  layer_transportation:z11
         SELECT
             osm_id, geometry,
-            NULL AS highway, NULL AS railway, NULL AS aerialway, shipway,
+            NULL AS highway, NULL AS construction, NULL AS railway, NULL AS aerialway, shipway,
             NULL AS public_transport, service_value(service) AS service,
             is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, NULL as man_made,
             layer, NULL::int AS level, NULL::boolean AS indoor,
@@ -300,7 +300,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_shipway_linestring_gen1  ->  layer_transportation:z12
         SELECT
             osm_id, geometry,
-            NULL AS highway, NULL AS railway, NULL AS aerialway, shipway,
+            NULL AS highway, NULL AS construction, 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, NULL as man_made,
             layer, NULL::int AS level, NULL::boolean AS indoor,
@@ -313,7 +313,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_shipway_linestring       ->  layer_transportation:z14_
         SELECT
             osm_id, geometry,
-            NULL AS highway, NULL AS railway, NULL AS aerialway, shipway,
+            NULL AS highway, NULL AS construction, NULL AS railway, NULL AS aerialway, shipway,
             NULL AS public_transport, service_value(service) AS service,
             is_bridge, is_tunnel, is_ford, is_ramp, is_oneway, NULL as man_made,
             layer, NULL::int AS level, NULL::boolean AS indoor,
@@ -330,7 +330,7 @@ indoor INT, surface TEXT) AS $$
         -- etldoc: osm_highway_polygon          ->  layer_transportation:z14_
         SELECT
             osm_id, geometry,
-            highway, NULL AS railway, NULL AS aerialway, NULL AS shipway,
+            highway, NULL AS construction, NULL AS railway, NULL AS aerialway, NULL AS shipway,
             public_transport, NULL AS service,
             CASE WHEN man_made IN ('bridge') THEN TRUE
                 ELSE FALSE
diff --git a/layers/transportation/mapping.yaml b/layers/transportation/mapping.yaml
index facd319..e4e8f7b 100644
--- a/layers/transportation/mapping.yaml
+++ b/layers/transportation/mapping.yaml
@@ -45,13 +45,13 @@ generalized_tables:
 # etldoc: imposm3 -> osm_highway_linestring_gen2
   highway_linestring_gen2:
     source: highway_linestring_gen1
-    sql_filter: highway IN ('motorway', 'trunk', 'primary', 'secondary', 'motorway_link', 'trunk_link', 'primary_link', 'secondary_link') AND NOT is_area
+    sql_filter: (highway IN ('motorway', 'trunk', 'primary', 'secondary', 'motorway_link', 'trunk_link', 'primary_link', 'secondary_link') OR highway = 'construction' AND construction IN ('motorway', 'trunk', 'primary', 'secondary', 'motorway_link', 'trunk_link', 'primary_link', 'secondary_link')) AND NOT is_area
     tolerance: ZRES11
 
 # etldoc: imposm3 -> osm_highway_linestring_gen1
   highway_linestring_gen1:
     source: highway_linestring
-    sql_filter: highway IN ('motorway', 'trunk', 'primary', 'secondary', 'tertiary', 'motorway_link', 'trunk_link', 'primary_link', 'secondary_link', 'tertiary_link') 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') OR highway = 'construction' AND construction IN ('motorway', 'trunk', 'primary', 'secondary', 'tertiary', 'motorway_link', 'trunk_link', 'primary_link', 'secondary_link', 'tertiary_link')) AND NOT is_area AND ST_IsValid(geometry)
     tolerance: ZRES12
 
 name_field: &name
@@ -150,6 +150,9 @@ tables:
     - name: highway
       key: highway
       type: string
+    - name: construction
+      key: construction
+      type: string
     - *ref
     - *network
     - *z_order
@@ -187,18 +190,19 @@ tables:
       - tertiary_link
       - unclassified
       - residential
-      - road
       - living_street
-      - raceway
-      - track
-      - service
-      - path
-      - cycleway
-      - bridleway
-      - footway
-      - corridor
+      - road
       - pedestrian
+      - path
+      - footway
+      - cycleway
       - steps
+      - bridleway
+      - corridor
+      - service
+      - track
+      - raceway
+      - construction
       public_transport:
       - platform
       man_made:
diff --git a/layers/transportation/transportation.yaml b/layers/transportation/transportation.yaml
index 83505d3..61f7499 100644
--- a/layers/transportation/transportation.yaml
+++ b/layers/transportation/transportation.yaml
@@ -14,9 +14,10 @@ layer:
   fields:
     class:
       description: |
-          Distinguish between more and less important roads or railways.
+          Distinguish between more and less important roads or railways and roads under construction.
           Class is derived from the value of the
           [`highway`](http://wiki.openstreetmap.org/wiki/Key:highway),
+          [`construction`](http://wiki.openstreetmap.org/wiki/Key:construction),
           [`railway`](http://wiki.openstreetmap.org/wiki/Key:railway),
           [`aerialway`](http://wiki.openstreetmap.org/wiki/Key:aerialway),
           [`route`](http://wiki.openstreetmap.org/wiki/Key:route) tag (for
@@ -33,6 +34,16 @@ layer:
       - track
       - path
       - raceway
+      - motorway_construction
+      - trunk_construction
+      - primary_construction
+      - secondary_construction
+      - tertiary_construction
+      - minor_construction
+      - service_construction
+      - track_construction
+      - path_construction
+      - raceway_construction
       - rail
       - transit
       - cable_car
diff --git a/layers/transportation/update_transportation_merge.sql b/layers/transportation/update_transportation_merge.sql
index 36d0931..a2c1852 100644
--- a/layers/transportation/update_transportation_merge.sql
+++ b/layers/transportation/update_transportation_merge.sql
@@ -22,84 +22,88 @@ CREATE INDEX IF NOT EXISTS osm_highway_linestring_highway_idx
 -- Improve performance of the sql below
 CREATE INDEX IF NOT EXISTS osm_highway_linestring_highway_partial_idx
   ON osm_highway_linestring(highway)
-  WHERE highway IN ('motorway','trunk', 'primary');
+  WHERE highway IN ('motorway','trunk', 'primary', 'construction');
 
   -- etldoc: osm_highway_linestring ->  osm_transportation_merge_linestring
 CREATE MATERIALIZED VIEW osm_transportation_merge_linestring AS (
     SELECT
         (ST_Dump(geometry)).geom AS geometry,
         NULL::bigint AS osm_id,
-        highway,
+        highway, construction,
         z_order
     FROM (
       SELECT
           ST_LineMerge(ST_Collect(geometry)) AS geometry,
-          highway,
+          highway, construction,
           min(z_order) AS z_order
       FROM osm_highway_linestring
-      WHERE highway IN ('motorway','trunk', 'primary') AND ST_IsValid(geometry)
-      group by highway
+      WHERE (highway IN ('motorway','trunk', 'primary') OR highway = 'construction' AND construction IN ('motorway','trunk', 'primary'))
+          AND ST_IsValid(geometry)
+      group by highway, construction
     ) AS highway_union
 );
 CREATE INDEX IF NOT EXISTS osm_transportation_merge_linestring_geometry_idx
   ON osm_transportation_merge_linestring USING gist(geometry);
 CREATE INDEX IF NOT EXISTS osm_transportation_merge_linestring_highway_partial_idx
-  ON osm_transportation_merge_linestring(highway)
-  WHERE highway IN ('motorway','trunk', 'primary');
+  ON osm_transportation_merge_linestring(highway, construction)
+  WHERE highway IN ('motorway','trunk', 'primary', 'construction');
 
 -- etldoc: osm_transportation_merge_linestring -> osm_transportation_merge_linestring_gen3
 CREATE MATERIALIZED VIEW osm_transportation_merge_linestring_gen3 AS (
-    SELECT ST_Simplify(geometry, 120) AS geometry, osm_id, highway, z_order
+    SELECT ST_Simplify(geometry, 120) AS geometry, osm_id, highway, construction, z_order
     FROM osm_transportation_merge_linestring
     WHERE highway IN ('motorway','trunk', 'primary')
+      OR highway = 'construction' AND construction IN ('motorway','trunk', 'primary')
 );
 CREATE INDEX IF NOT EXISTS osm_transportation_merge_linestring_gen3_geometry_idx
   ON osm_transportation_merge_linestring_gen3 USING gist(geometry);
 CREATE INDEX IF NOT EXISTS osm_transportation_merge_linestring_gen3_highway_partial_idx
-  ON osm_transportation_merge_linestring_gen3(highway)
-  WHERE highway IN ('motorway','trunk', 'primary');
+  ON osm_transportation_merge_linestring_gen3(highway, construction)
+  WHERE highway IN ('motorway','trunk', 'primary', 'construction');
 
 -- etldoc: osm_transportation_merge_linestring_gen3 -> osm_transportation_merge_linestring_gen4
 CREATE MATERIALIZED VIEW osm_transportation_merge_linestring_gen4 AS (
-    SELECT ST_Simplify(geometry, 200) AS geometry, osm_id, highway, z_order
+    SELECT ST_Simplify(geometry, 200) AS geometry, osm_id, highway, construction, z_order
     FROM osm_transportation_merge_linestring_gen3
-    WHERE highway IN ('motorway','trunk', 'primary') AND ST_Length(geometry) > 50
+    WHERE (highway IN ('motorway','trunk', 'primary') OR highway = 'construction' AND construction IN ('motorway','trunk', 'primary'))
+        AND ST_Length(geometry) > 50
 );
 CREATE INDEX IF NOT EXISTS osm_transportation_merge_linestring_gen4_geometry_idx
   ON osm_transportation_merge_linestring_gen4 USING gist(geometry);
 CREATE INDEX IF NOT EXISTS osm_transportation_merge_linestring_gen4_highway_partial_idx
-  ON osm_transportation_merge_linestring_gen4(highway)
-  WHERE highway IN ('motorway','trunk', 'primary');
+  ON osm_transportation_merge_linestring_gen4(highway, construction)
+  WHERE highway IN ('motorway','trunk', 'primary', 'construction');
 
 -- etldoc: osm_transportation_merge_linestring_gen4 -> osm_transportation_merge_linestring_gen5
 CREATE MATERIALIZED VIEW osm_transportation_merge_linestring_gen5 AS (
-    SELECT ST_Simplify(geometry, 500) AS geometry, osm_id, highway, z_order
+    SELECT ST_Simplify(geometry, 500) AS geometry, osm_id, highway, construction, z_order
     FROM osm_transportation_merge_linestring_gen4
-    WHERE highway IN ('motorway','trunk') AND ST_Length(geometry) > 100
+    WHERE (highway IN ('motorway','trunk') OR highway = 'construction' AND construction IN ('motorway','trunk'))
+        AND ST_Length(geometry) > 100
 );
 CREATE INDEX IF NOT EXISTS osm_transportation_merge_linestring_gen5_geometry_idx
   ON osm_transportation_merge_linestring_gen5 USING gist(geometry);
 CREATE INDEX IF NOT EXISTS osm_transportation_merge_linestring_gen5_highway_partial_idx
-  ON osm_transportation_merge_linestring_gen5(highway)
-  WHERE highway IN ('motorway', 'trunk');
+  ON osm_transportation_merge_linestring_gen5(highway, construction)
+  WHERE highway IN ('motorway','trunk', 'construction');
 
 -- etldoc: osm_transportation_merge_linestring_gen5 -> osm_transportation_merge_linestring_gen6
 CREATE MATERIALIZED VIEW osm_transportation_merge_linestring_gen6 AS (
-    SELECT ST_Simplify(geometry, 1000) AS geometry, osm_id, highway, z_order
+    SELECT ST_Simplify(geometry, 1000) AS geometry, osm_id, highway, construction, z_order
     FROM osm_transportation_merge_linestring_gen5
-    WHERE highway IN ('motorway','trunk') AND ST_Length(geometry) > 500
+    WHERE (highway IN ('motorway','trunk') OR highway = 'construction' AND construction IN ('motorway','trunk')) AND ST_Length(geometry) > 500
 );
 CREATE INDEX IF NOT EXISTS osm_transportation_merge_linestring_gen6_geometry_idx
   ON osm_transportation_merge_linestring_gen6 USING gist(geometry);
 CREATE INDEX IF NOT EXISTS osm_transportation_merge_linestring_gen6_highway_partial_idx
-  ON osm_transportation_merge_linestring_gen6(highway)
-  WHERE highway IN ('motorway','trunk');
+  ON osm_transportation_merge_linestring_gen6(highway, construction)
+  WHERE highway IN ('motorway','trunk', 'construction');
 
 -- etldoc: osm_transportation_merge_linestring_gen6 -> osm_transportation_merge_linestring_gen7
 CREATE MATERIALIZED VIEW osm_transportation_merge_linestring_gen7 AS (
-    SELECT ST_Simplify(geometry, 2000) AS geometry, osm_id, highway, z_order
+    SELECT ST_Simplify(geometry, 2000) AS geometry, osm_id, highway, construction, z_order
     FROM osm_transportation_merge_linestring_gen6
-    WHERE highway IN ('motorway') AND ST_Length(geometry) > 1000
+    WHERE (highway = 'motorway' OR highway = 'construction' AND construction = 'motorway') AND ST_Length(geometry) > 1000
 );
 CREATE INDEX IF NOT EXISTS osm_transportation_merge_linestring_gen7_geometry_idx
   ON osm_transportation_merge_linestring_gen7 USING gist(geometry);
diff --git a/layers/transportation_name/layer.sql b/layers/transportation_name/layer.sql
index 0cfb45a..9f108d6 100644
--- a/layers/transportation_name/layer.sql
+++ b/layers/transportation_name/layer.sql
@@ -19,9 +19,9 @@ RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text,
         when length(coalesce(ref, ''))>0
           then 'road'
       end as network,
-      highway_class(highway, '') AS class,
+      highway_class(highway, '', construction) AS class,
       CASE
-          WHEN highway IS NOT NULL AND highway_class(highway, '') = 'path'
+          WHEN highway IS NOT NULL AND highway_class(highway, '', construction) = 'path'
               THEN highway
           ELSE NULL
       END AS subclass,
@@ -70,6 +70,7 @@ RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text,
           "tags",
           ref,
           highway,
+          construction,
           network,
           z_order,
           layer,
@@ -78,7 +79,7 @@ RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text,
         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')
+            AND highway_class(highway, '', construction) NOT IN ('minor', 'track', 'path')
             AND NOT highway_is_link(highway)
         UNION ALL
 
@@ -92,6 +93,7 @@ RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text,
           "tags",
           ref,
           highway,
+          construction,
           network,
           z_order,
           layer,
@@ -100,7 +102,7 @@ RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text,
         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')
+            AND highway_class(highway, '', construction) NOT IN ('track', 'path')
         UNION ALL
 
         -- etldoc: osm_transportation_name_linestring ->  layer_transportation_name:z14_
@@ -113,6 +115,7 @@ RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text,
           "tags",
           ref,
           highway,
+          construction,
           network,
           z_order,
           layer,
diff --git a/layers/transportation_name/transportation_name.yaml b/layers/transportation_name/transportation_name.yaml
index 263032c..746ec50 100644
--- a/layers/transportation_name/transportation_name.yaml
+++ b/layers/transportation_name/transportation_name.yaml
@@ -29,7 +29,7 @@ layer:
       - road (default)
     class:
       description: |
-          Distinguish between more and less important roads.
+          Distinguish between more and less important roads and roads under construction.
       values:
       - motorway
       - trunk
@@ -41,6 +41,16 @@ layer:
       - track
       - path
       - raceway
+      - motorway_construction
+      - trunk_construction
+      - primary_construction
+      - secondary_construction
+      - tertiary_construction
+      - minor_construction
+      - service_construction
+      - track_construction
+      - path_construction
+      - raceway_construction
       - rail
       - transit
     subclass:
diff --git a/layers/transportation_name/update_transportation_name.sql b/layers/transportation_name/update_transportation_name.sql
index 82a49dc..58a521f 100644
--- a/layers/transportation_name/update_transportation_name.sql
+++ b/layers/transportation_name/update_transportation_name.sql
@@ -24,6 +24,7 @@ CREATE MATERIALIZED VIEW osm_transportation_name_network AS (
         else hl.ref
       end as ref,
       hl.highway,
+      hl.construction,
       CASE WHEN highway IN ('footway', 'steps') THEN layer
           ELSE NULL::int
       END AS layer,
@@ -53,6 +54,7 @@ CREATE MATERIALIZED VIEW osm_transportation_name_linestring AS (
         tags || get_basic_names(tags, geometry) AS "tags",
         ref,
         highway,
+        construction,
         "level",
         layer,
         indoor,
@@ -68,6 +70,7 @@ CREATE MATERIALIZED VIEW osm_transportation_name_linestring AS (
              AS "tags",
           ref,
           highway,
+          construction,
           "level",
           layer,
           indoor,
@@ -77,56 +80,56 @@ CREATE MATERIALIZED VIEW osm_transportation_name_linestring AS (
       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, "level", layer, indoor, network_type
+      group by name, name_en, name_de, ref, highway, construction, "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);
 
 CREATE INDEX IF NOT EXISTS osm_transportation_name_linestring_highway_partial_idx
-  ON osm_transportation_name_linestring(highway)
-  WHERE highway IN ('motorway','trunk');
+  ON osm_transportation_name_linestring(highway, construction)
+  WHERE highway IN ('motorway','trunk', 'construction');
 
 -- etldoc: osm_transportation_name_linestring -> osm_transportation_name_linestring_gen1
 CREATE MATERIALIZED VIEW osm_transportation_name_linestring_gen1 AS (
-    SELECT ST_Simplify(geometry, 50) AS geometry, osm_id, name, name_en, name_de, tags, ref, highway, network, z_order
+    SELECT ST_Simplify(geometry, 50) AS geometry, osm_id, name, name_en, name_de, tags, ref, highway, construction, network, z_order
     FROM osm_transportation_name_linestring
-    WHERE highway IN ('motorway','trunk')  AND ST_Length(geometry) > 8000
+    WHERE (highway IN ('motorway','trunk') OR highway = 'construction' AND construction IN ('motorway','trunk'))  AND ST_Length(geometry) > 8000
 );
 CREATE INDEX IF NOT EXISTS osm_transportation_name_linestring_gen1_geometry_idx ON osm_transportation_name_linestring_gen1 USING gist(geometry);
 
 CREATE INDEX IF NOT EXISTS osm_transportation_name_linestring_gen1_highway_partial_idx
-  ON osm_transportation_name_linestring_gen1(highway)
-  WHERE highway IN ('motorway','trunk');
+  ON osm_transportation_name_linestring_gen1(highway, construction)
+  WHERE highway IN ('motorway','trunk', 'construction');
 
 -- etldoc: osm_transportation_name_linestring_gen1 -> osm_transportation_name_linestring_gen2
 CREATE MATERIALIZED VIEW osm_transportation_name_linestring_gen2 AS (
-    SELECT ST_Simplify(geometry, 120) AS geometry, osm_id, name, name_en, name_de, tags, ref, highway, network, z_order
+    SELECT ST_Simplify(geometry, 120) AS geometry, osm_id, name, name_en, name_de, tags, ref, highway, construction, network, z_order
     FROM osm_transportation_name_linestring_gen1
-    WHERE highway IN ('motorway','trunk')  AND ST_Length(geometry) > 14000
+    WHERE (highway IN ('motorway','trunk') OR highway = 'construction' AND construction IN ('motorway','trunk'))  AND ST_Length(geometry) > 14000
 );
 CREATE INDEX IF NOT EXISTS osm_transportation_name_linestring_gen2_geometry_idx ON osm_transportation_name_linestring_gen2 USING gist(geometry);
 
 CREATE INDEX IF NOT EXISTS osm_transportation_name_linestring_gen2_highway_partial_idx
-  ON osm_transportation_name_linestring_gen2(highway)
-  WHERE highway = 'motorway';
+  ON osm_transportation_name_linestring_gen2(highway, construction)
+  WHERE highway IN ('motorway','trunk', 'construction');
 
 -- etldoc: osm_transportation_name_linestring_gen2 -> osm_transportation_name_linestring_gen3
 CREATE MATERIALIZED VIEW osm_transportation_name_linestring_gen3 AS (
-    SELECT ST_Simplify(geometry, 200) AS geometry, osm_id, name, name_en, name_de, tags, ref, highway, network, z_order
+    SELECT ST_Simplify(geometry, 200) AS geometry, osm_id, name, name_en, name_de, tags, ref, highway, construction, network, z_order
     FROM osm_transportation_name_linestring_gen2
-    WHERE highway = 'motorway' AND ST_Length(geometry) > 20000
+    WHERE (highway = 'motorway' OR highway = 'construction' AND construction = 'motorway') AND ST_Length(geometry) > 20000
 );
 CREATE INDEX IF NOT EXISTS osm_transportation_name_linestring_gen3_geometry_idx ON osm_transportation_name_linestring_gen3 USING gist(geometry);
 
 CREATE INDEX IF NOT EXISTS osm_transportation_name_linestring_gen3_highway_partial_idx
-  ON osm_transportation_name_linestring_gen3(highway)
-  WHERE highway = 'motorway';
+  ON osm_transportation_name_linestring_gen3(highway, construction)
+  WHERE highway IN ('motorway', 'construction');
 
 -- etldoc: osm_transportation_name_linestring_gen3 -> osm_transportation_name_linestring_gen4
 CREATE MATERIALIZED VIEW osm_transportation_name_linestring_gen4 AS (
-    SELECT ST_Simplify(geometry, 500) AS geometry, osm_id, name, name_en, name_de, tags, ref, highway, network, z_order
+    SELECT ST_Simplify(geometry, 500) AS geometry, osm_id, name, name_en, name_de, tags, ref, highway, construction, network, z_order
     FROM osm_transportation_name_linestring_gen3
-    WHERE highway = 'motorway' AND ST_Length(geometry) > 20000
+    WHERE (highway = 'motorway' OR highway = 'construction' AND construction = 'motorway') AND ST_Length(geometry) > 20000
 );
 CREATE INDEX IF NOT EXISTS osm_transportation_name_linestring_gen4_geometry_idx ON osm_transportation_name_linestring_gen4 USING gist(geometry);