first conditional turn restrictions test

features/car/conditional_restrictions.feature

@@ -0,0 +1,34 @@
+@routing @car @restrictions
+Feature: Car - Turn restrictions
+# Handle turn restrictions as defined by http://wiki.openstreetmap.org/wiki/Relation:restriction
+# Note that if u-turns are allowed, turn restrictions can lead to suprising, but correct, routes.
+
+    Background: Use car routing
+        Given the profile "car"
+        Given a grid size of 200 meters
+
+    @no_turning
+    Scenario: Car - No left turn
+        Given the extract extra arguments "--parse-conditional-restrictions=1"
+        Given the contract extra arguments "--time-zone-file=world/tz_world.shp"
+        Given the node map
+            """
+              n
+              j e
+              s
+            """
+
+        And the ways
+            | nodes | oneway |
+            | nj    | no     |
+            | js    | no     |
+            | ej    | yes    |
+
+        And the relations
+            | type        | way:from | way:to | node:via | restriction:conditional               |
+            | restriction | ej       | nj     | j        | only_right_turn @ (Mo-Su 00:00-23:59) |
+
+        When I route I should get
+            | from | to | route          |
+            | e    | s  | ej,nj,nj,js,js |
+            | e    | n  | ej,nj,nj       |

src/tools/extract.cpp

@@ -53,6 +53,7 @@ return_code parseArguments(int argc, char *argv[], extractor::ExtractorConfig &e
         "Use metadata during osm parsing (This can affect the extraction performance).")(
         "parse-conditional-restrictions",
         boost::program_options::value<bool>(&extractor_config.parse_conditionals)
+            ->implicit_value(true)
             ->default_value(false),
         "Save conditional restrictions found during extraction to disk for use "
         "during contraction");