Expose driving_side as a property on RouteStep

include/engine/guidance/assemble_steps.hpp

@@ -141,7 +141,8 @@ inline std::vector<RouteStep> assembleSteps(const datafacade::BaseDataFacade &fa
                                           maneuver,
                                           leg_geometry.FrontIndex(segment_index),
                                           leg_geometry.BackIndex(segment_index) + 1,
-                                          {intersection}});
+                                          {intersection},
+                                          path_point.is_left_hand_driving});
 
                 if (leg_data_index + 1 < leg_data.size())
                 {
@@ -219,7 +220,8 @@ inline std::vector<RouteStep> assembleSteps(const datafacade::BaseDataFacade &fa
                                   maneuver,
                                   leg_geometry.FrontIndex(segment_index),
                                   leg_geometry.BackIndex(segment_index) + 1,
-                                  {intersection}});
+                                  {intersection},
+                                  facade.IsLeftHandDriving(target_node_id)});
     }
     // In this case the source + target are on the same edge segment
     else
@@ -261,7 +263,8 @@ inline std::vector<RouteStep> assembleSteps(const datafacade::BaseDataFacade &fa
                                   std::move(maneuver),
                                   leg_geometry.FrontIndex(segment_index),
                                   leg_geometry.BackIndex(segment_index) + 1,
-                                  {intersection}});
+                                  {intersection},
+                                  facade.IsLeftHandDriving(source_node_id)});
     }
 
     BOOST_ASSERT(segment_index == number_of_segments - 1);
@@ -301,7 +304,8 @@ inline std::vector<RouteStep> assembleSteps(const datafacade::BaseDataFacade &fa
                               std::move(maneuver),
                               leg_geometry.locations.size() - 1,
                               leg_geometry.locations.size(),
-                              {intersection}});
+                              {intersection},
+                              facade.IsLeftHandDriving(source_node_id)});
 
     BOOST_ASSERT(steps.front().intersections.size() == 1);
     BOOST_ASSERT(steps.front().intersections.front().bearings.size() == 1);

include/engine/guidance/route_step.hpp

@@ -76,6 +76,7 @@ struct RouteStep
     std::size_t geometry_begin;
     std::size_t geometry_end;
     std::vector<IntermediateIntersection> intersections;
+    bool is_left_hand_driving;
 
     // remove all information from the route step, marking it as invalid (used to indicate empty
     // steps to be removed).
@@ -129,6 +130,7 @@ inline void RouteStep::Invalidate()
     geometry_end = 0;
     intersections.clear();
     intersections.push_back(getInvalidIntersection());
+    is_left_hand_driving = false;
 }
 
 // Elongate by another step in front

include/engine/internal_route_result.hpp

@@ -57,6 +57,9 @@ struct PathData
     util::guidance::TurnBearing pre_turn_bearing;
     // bearing (as seen from the intersection) post-turn
     util::guidance::TurnBearing post_turn_bearing;
+
+    // Driving side of the turn
+    bool is_left_hand_driving;
 };
 
 struct InternalRouteResult

include/engine/routing_algorithms/routing_base.hpp

@@ -185,6 +185,8 @@ void annotatePath(const FacadeT &facade,
                               : 0);
         const std::size_t end_index = weight_vector.size();
 
+        bool is_left_hand_driving = facade.IsLeftHandDriving(node_id);
+
         BOOST_ASSERT(start_index >= 0);
         BOOST_ASSERT(start_index < end_index);
         for (std::size_t segment_idx = start_index; segment_idx < end_index; ++segment_idx)
@@ -202,7 +204,8 @@ void annotatePath(const FacadeT &facade,
                                              EMPTY_ENTRY_CLASS,
                                              datasource_vector[segment_idx],
                                              util::guidance::TurnBearing(0),
-                                             util::guidance::TurnBearing(0)});
+                                             util::guidance::TurnBearing(0),
+                                             is_left_hand_driving});
         }
         BOOST_ASSERT(unpacked_path.size() > 0);
         if (facade.HasLaneData(turn_id))
@@ -254,6 +257,7 @@ void annotatePath(const FacadeT &facade,
     // t: fwd_segment 3
     // -> (U, v), (v, w), (w, x)
     // note that (x, t) is _not_ included but needs to be added later.
+    bool is_target_left_hand_driving = facade.IsLeftHandDriving(target_node_id);
     for (std::size_t segment_idx = start_index; segment_idx != end_index;
          (start_index < end_index ? ++segment_idx : --segment_idx))
     {
@@ -273,7 +277,8 @@ void annotatePath(const FacadeT &facade,
                      EMPTY_ENTRY_CLASS,
                      datasource_vector[segment_idx],
                      util::guidance::TurnBearing(0),
-                     util::guidance::TurnBearing(0)});
+                     util::guidance::TurnBearing(0),
+                     is_target_left_hand_driving});
     }
 
     if (unpacked_path.size() > 0)