do not emit turns on ferries

src/extractor/guidance/turn_analysis.cpp

@@ -1,6 +1,6 @@
-#include "extractor/guidance/turn_analysis.hpp"
 #include "extractor/guidance/constants.hpp"
 #include "extractor/guidance/road_classification.hpp"
+#include "extractor/guidance/turn_analysis.hpp"
 
 #include "util/coordinate.hpp"
 #include "util/coordinate_calculation.hpp"
@@ -65,7 +65,12 @@ TurnAnalysis::TurnAnalysis(const util::NodeBasedDynamicGraph &node_based_graph,
                        node_based_graph,
                        node_info_list,
                        name_table,
-                       street_name_suffix_table)
+                       street_name_suffix_table),
+      suppress_mode_handler(intersection_generator,
+                            node_based_graph,
+                            node_info_list,
+                            name_table,
+                            street_name_suffix_table)
 {
 }
 
@@ -106,6 +111,16 @@ Intersection TurnAnalysis::AssignTurnTypes(const NodeID node_prior_to_intersecti
                                             {TurnType::Invalid, DirectionModifier::UTurn},
                                             INVALID_LANE_DATAID);
                    });
+    // Suppress turns on ways between mode types that do not need guidance
+    if (suppress_mode_handler.canProcess(
+            node_prior_to_intersection, entering_via_edge, intersection))
+    {
+        intersection = suppress_mode_handler(
+            node_prior_to_intersection, entering_via_edge, std::move(intersection));
+
+        return intersection;
+    }
+
     if (roundabout_handler.canProcess(node_prior_to_intersection, entering_via_edge, intersection))
     {
         intersection = roundabout_handler(