diff --git a/features/testbot/projection.feature b/features/testbot/projection.feature
index 6d330b237..805ddc233 100644
--- a/features/testbot/projection.feature
+++ b/features/testbot/projection.feature
@@ -36,3 +36,38 @@ Feature: Projection to nearest point on road
             | from | to | route     | distance |
             | d    | b  | abc,abc   | 0m       |
             | b    | d  | abc,abc   | 0m       |
+
+
+    Scenario: Projection results negative duration
+        Given the profile file "testbot" extended with
+        """
+        api_version = 1
+        function segment_function (segment)
+          segment.weight = 5.5
+          segment.duration = 2.8
+        end
+        """
+
+        Given the node locations
+            | node |        lon |        lat |
+            |    e | -51.218994 | -30.023866 |
+            |    f | -51.218918 | -30.023741 |
+            |    1 | -51.219109 | -30.023766 |
+            |    2 | -51.219109 | -30.023764 |
+            |    3 | -51.219109 | -30.023763 |
+            |    4 | -51.219109 | -30.023762 |
+            |    5 | -51.219109 | -30.023761 |
+            |    6 | -51.219109 | -30.023756 |
+
+        And the ways
+            | nodes |
+            | ef    |
+
+        When I route I should get
+            | waypoints | route | distance | time | weight |
+            | 1,4       | ef,ef | 0.4m     | 0.1s |    0.1 |
+            | 2,4       | ef,ef | 0.1m     | 0s   |      0 |
+            | 3,4       | ef,ef | 0.1m     | 0s   |      0 |
+            | 4,4       | ef,ef | 0m       | 0s   |      0 |
+            | 5,4       | ef,ef | 0.1m     | 0s   |    0.1 |
+            | 6,4       | ef,ef | 0.6m     | 0.1s |    0.2 |
diff --git a/include/engine/guidance/assemble_leg.hpp b/include/engine/guidance/assemble_leg.hpp
index 4ab1db02c..5e1e2d6f2 100644
--- a/include/engine/guidance/assemble_leg.hpp
+++ b/include/engine/guidance/assemble_leg.hpp
@@ -170,10 +170,13 @@ inline RouteLeg assembleLeg(const datafacade::BaseDataFacade &facade,
     weight = weight + target_weight;
     if (route_data.empty())
     {
-        duration -= (target_traversed_in_reverse ? source_node.reverse_duration
-                                                 : source_node.forward_duration);
         weight -=
             (target_traversed_in_reverse ? source_node.reverse_weight : source_node.forward_weight);
+        duration -= (target_traversed_in_reverse ? source_node.reverse_duration
+                                                 : source_node.forward_duration);
+        // use rectified linear unit function to avoid negative duration values
+        // due to flooring errors in phantom snapping
+        duration = std::max(0, duration);
     }
 
     std::string summary;
diff --git a/include/engine/guidance/assemble_steps.hpp b/include/engine/guidance/assemble_steps.hpp
index 0f52995d3..ee3771cb5 100644
--- a/include/engine/guidance/assemble_steps.hpp
+++ b/include/engine/guidance/assemble_steps.hpp
@@ -223,9 +223,11 @@ inline std::vector<RouteStep> assembleSteps(const datafacade::BaseDataFacade &fa
         // |   |---------| source_weight
         // |         |---| target_weight
         const EdgeWeight weight = target_weight - source_weight;
-        const EdgeWeight duration = target_duration - source_duration;
         BOOST_ASSERT(weight >= 0);
-        BOOST_ASSERT(duration >= 0);
+
+        // use rectified linear unit function to avoid negative duration values
+        // due to flooring errors in phantom snapping
+        const EdgeWeight duration = std::max(0, target_duration - source_duration);
 
         steps.push_back(RouteStep{source_node.name_id,
                                   facade.GetNameForID(source_node.name_id).to_string(),