diff --git a/DataStructures/ImportEdge.h b/DataStructures/ImportEdge.h
index 5da516b15..38656d16b 100644
--- a/DataStructures/ImportEdge.h
+++ b/DataStructures/ImportEdge.h
@@ -18,16 +18,17 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 or see http://www.gnu.org/licenses/agpl.txt.
  */
 
-#ifndef EDGE_H
-#define EDGE_H
-
+#ifndef IMPORT_EDGE_H
+#define IMPORT_EDGE_H
 
 #include "../Util/OSRMException.h"
-#include <cassert>
+#include "../typedefs.h"
+
+#include <boost/assert.hpp>
 
 class NodeBasedEdge {
-public:
 
+public:
     bool operator< (const NodeBasedEdge& e) const {
         if (source() == e.source()) {
             if (target() == e.target()) {
@@ -58,9 +59,9 @@ public:
         _target(t),
         _name(n),
         _weight(w),
+        _type(ty),
         forward(f),
         backward(b),
-        _type(ty),
         _roundabout(ra),
         _ignoreInGrid(ig),
         _accessRestricted(ar),
@@ -71,42 +72,41 @@ public:
         }
     }
 
-    NodeID target() const {return _target; }
-    NodeID source() const {return _source; }
-    NodeID name() const { return _name; }
-    EdgeWeight weight() const {return _weight; }
+    NodeID target()             const {return _target; }
+    NodeID source()             const {return _source; }
+    NodeID name()               const { return _name;  }
+    EdgeWeight weight()         const {return _weight; }
+    short type()                const {
+        BOOST_ASSERT_MSG(_type >= 0, "type of ImportEdge invalid");
+                                        return _type;   }
+    bool isBackward()           const { return backward; }
+    bool isForward()            const { return forward; }
+    bool isLocatable()          const { return _type != 14; }
+    bool isRoundabout()         const { return _roundabout; }
+    bool ignoreInGrid()         const { return _ignoreInGrid; }
+    bool isAccessRestricted()   const { return _accessRestricted; }
+    bool isContraFlow()         const { return _contraFlow; }
 
-    short type() const { assert(_type >= 0); return _type; }
-    bool isBackward() const { return backward; }
-    bool isForward() const { return forward; }
-    bool isLocatable() const { return _type != 14; }
-    bool isRoundabout() const { return _roundabout; }
-    bool ignoreInGrid() const { return _ignoreInGrid; }
-    bool isAccessRestricted() const { return _accessRestricted; }
-    bool isContraFlow() const { return _contraFlow; }
-
-    NodeID _source;
-    NodeID _target;
-    NodeID _name;
-    EdgeWeight _weight;
-    bool forward;
-    bool backward;
-    short _type;
-    bool _roundabout;
-    bool _ignoreInGrid;
-    bool _accessRestricted;
-    bool _contraFlow;
+    //TODO: names need to be fixed.
+    NodeID      _source;
+    NodeID      _target;
+    NodeID      _name;
+    EdgeWeight  _weight;
+    short       _type;
+    bool        forward:1;
+    bool        backward:1;
+    bool        _roundabout:1;
+    bool        _ignoreInGrid:1;
+    bool        _accessRestricted:1;
+    bool        _contraFlow:1;
 
 private:
-    /** Default constructor. target and weight are set to 0.*/
-    NodeBasedEdge() :
-        _source(0), _target(0), _name(0), _weight(0), forward(0), backward(0), _type(0), _roundabout(false), _ignoreInGrid(false), _accessRestricted(false), _contraFlow(false) { assert(false); } //shall not be used.
-
+    NodeBasedEdge() { }
 };
 
 class EdgeBasedEdge {
-public:
 
+public:
     bool operator< (const EdgeBasedEdge& e) const {
         if (source() == e.source()) {
             if (target() == e.target()) {
@@ -141,7 +141,14 @@ public:
         m_backward(false)
     { }
 
-    explicit EdgeBasedEdge(const NodeID s, const NodeID t, const NodeID v, const EdgeWeight w, const bool f, const bool b) :
+    explicit EdgeBasedEdge(
+        const NodeID s,
+        const NodeID t,
+        const NodeID v,
+        const EdgeWeight w,
+        const bool f,
+        const bool b
+    ) :
         m_source(s),
         m_target(t),
         m_edgeID(v),
@@ -150,21 +157,22 @@ public:
         m_backward(b)
     {}
 
-    NodeID target() const {return m_target; }
-    NodeID source() const {return m_source; }
-    EdgeWeight weight() const {return m_weight; }
-    NodeID id() const { return m_edgeID; }
-    bool isBackward() const { return m_backward; }
-    bool isForward() const { return m_forward; }
+    NodeID      target()        const { return m_target;   }
+    NodeID      source()        const { return m_source;   }
+    EdgeWeight  weight()        const { return m_weight;   }
+    NodeID      id()            const { return m_edgeID;   }
+    bool        isBackward()    const { return m_backward; }
+    bool        isForward()     const { return m_forward;  }
+
 private:
-    NodeID m_source;
-    NodeID m_target;
-    NodeID m_edgeID;
-    EdgeWeight m_weight:30;
-    bool m_forward:1;
-    bool m_backward:1;
+    NodeID      m_source;
+    NodeID      m_target;
+    NodeID      m_edgeID;
+    EdgeWeight  m_weight:30;
+    bool        m_forward:1;
+    bool        m_backward:1;
 };
 
 typedef NodeBasedEdge ImportEdge;
 
-#endif // EDGE_H
+#endif /* IMPORT_EDGE_H */