Removing turns in the case if (1) source and target names are the same; (2) the angle between is TurnSlightRight, TurnSlightLeft or GoStraight

routing/osrm_router.cpp

@@ -997,6 +997,14 @@ void OsrmRouter::FixupTurns(vector<m2::PointD> const & points, Route::TurnsT & t
       continue;
     }
 
+    if (!t.m_srcName.empty()
+        && t.m_srcName == t.m_trgName
+        && turns::IsTurnSlightOrStraight(t.m_turn))
+    {
+      turnsDir.erase(turnsDir.begin() + idx);
+      continue;
+    }
+
     ++idx;
   }
 }

routing/turns.cpp

@@ -54,6 +54,10 @@ bool IsStayOnRoad(TurnDirection t)
   return (t == turns::GoStraight || t == turns::StayOnRoundAbout);
 }
 
+bool IsTurnSlightOrStraight(TurnDirection t)
+{
+  return (t == GoStraight || t == TurnSlightRight || t == TurnSlightLeft);
 }
 
 }
+}

routing/turns.hpp

@@ -46,6 +46,7 @@ bool IsLeftTurn(TurnDirection t);
 bool IsRightTurn(TurnDirection t);
 bool IsLeftOrRightTurn(TurnDirection t);
 bool IsStayOnRoad(TurnDirection t);
+bool IsTurnSlightOrStraight(TurnDirection t);
 
 }
 }