Fix service/man_made npe (#72)

planetiler-basemap/src/main/java/com/onthegomap/planetiler/basemap/layers/Transportation.java

@@ -222,7 +222,7 @@ public class Transportation implements
       "highway", coalesce(highway, ""),
       "public_transport", coalesce(publicTransport, ""),
       "construction", coalesce(construction, "")
-    ), null) : manMade;
+    ), null) : isBridgeOrPier(manMade) ? manMade : null;
   }
 
   static String highwaySubclass(String highwayClass, String publicTransport, String highway) {

planetiler-basemap/src/test/java/com/onthegomap/planetiler/basemap/layers/TransportationTest.java

@@ -497,6 +497,24 @@ public class TransportationTest extends AbstractLayerTest {
     ))));
   }
 
+  @Test
+  public void testIgnoreManMadeWhenNotBridgeOrPier() {
+    // https://github.com/onthegomap/planetiler/issues/69
+    assertFeatures(14, List.of(), process(lineFeature(Map.of(
+      "man_made", "storage_tank",
+      "service", "driveway"
+    ))));
+    assertFeatures(14, List.of(), process(lineFeature(Map.of(
+      "man_made", "courtyard",
+      "service", "driveway"
+    ))));
+    assertFeatures(14, List.of(), process(lineFeature(Map.of(
+      "man_made", "courtyard",
+      "service", "driveway",
+      "name", "Named Driveway"
+    ))));
+  }
+
   @Test
   public void testRaceway() {
     assertFeatures(13, List.of(Map.of(