diff --git a/data/test_data/traff/DE-A10-Werder-GrossKreutz.xml b/data/test_data/traff/DE-A10-Werder-GrossKreutz.xml
new file mode 100644
index 000000000..6ea4707b8
--- /dev/null
+++ b/data/test_data/traff/DE-A10-Werder-GrossKreutz.xml
@@ -0,0 +1,17 @@
+<!-- From DE-RealWorldLargeFeed. -->
+<!--
+    The route starts at a large junction, goes down the wrong carriageway of the motorway,
+    changes direction at the next junction, then back.
+-->
+<feed>
+  <message expiration_time="2025-10-09T21:37:08+03:00" id="tmc:d.1.7:d.1.10209.n.1" receive_time="2025-10-09T21:17:08+03:00" update_time="2025-10-09T21:17:08+03:00">
+    <location directionality="ONE_DIRECTION" fuzziness="LOW_RES" road_class="MOTORWAY" road_name="Westlicher Berliner Ring" road_ref="A10">
+      <from junction_name="Werder" junction_ref="21">+52.334801 +12.814650</from>
+      <to junction_name="Groß Kreutz" junction_ref="22">+52.393700 +12.835000</to>
+    </location>
+    <events>
+      <event class="CONGESTION" type="CONGESTION_STATIONARY_TRAFFIC">
+      </event>
+    </events>
+  </message>
+</feed>
diff --git a/data/test_data/traff/DE-A115-PotsdamDrewitz-Nuthetal.xml b/data/test_data/traff/DE-A115-PotsdamDrewitz-Nuthetal.xml
new file mode 100644
index 000000000..3d1c93472
--- /dev/null
+++ b/data/test_data/traff/DE-A115-PotsdamDrewitz-Nuthetal.xml
@@ -0,0 +1,17 @@
+<!-- From DE-RealWorldLargeFeed. -->
+<!--
+    The route ends at a large junction, proceeds past the reference point, then
+    goes back down the wrong carriageway of the motorway.
+-->
+<feed>
+  <message expiration_time="2025-10-09T21:37:08+03:00" id="tmc:d.1.7:d.1.10292.p.1" receive_time="2025-10-09T21:17:08+03:00" update_time="2025-10-09T21:17:08+03:00">
+    <location directionality="ONE_DIRECTION" fuzziness="LOW_RES" road_class="MOTORWAY" road_name="Autobahnzubringer Magdeburg" road_ref="A115">
+      <from junction_name="Potsdam-Drewitz" junction_ref="5a">+52.352650 +13.140700</from>
+      <to junction_name="Nuthetal" junction_ref="7">+52.300201 +13.083500</to>
+    </location>
+    <events>
+      <event class="CONGESTION" type="CONGESTION_STATIONARY_TRAFFIC">
+      </event>
+    </events>
+  </message>
+</feed>
diff --git a/data/test_data/traff/DE-B2R-SendlingSued-Passauerstrasse.xml b/data/test_data/traff/DE-B2R-SendlingSued-Passauerstrasse.xml
new file mode 100644
index 000000000..72eb3e515
--- /dev/null
+++ b/data/test_data/traff/DE-B2R-SendlingSued-Passauerstrasse.xml
@@ -0,0 +1,18 @@
+<!-- From DE-realworld5. -->
+<!--
+     A combination of reference points on the opposite carriageway, high offroad cost,
+     allowing any road to be used and a low penalty results in a completely incorrect
+     location (through a residential area rather than along the opposite carriageway).
+-->
+<feed>
+  <message expiration_time="2025-10-09T21:37:08+03:00" id="tmc:d.1.15:d.1.22689.p.1" receive_time="2025-10-09T21:17:08+03:00" update_time="2025-10-09T21:17:08+03:00">
+    <location directionality="ONE_DIRECTION" fuzziness="LOW_RES" road_name="Mittlerer Ring" road_ref="B2R">
+      <from junction_name="München-Sendling-Süd">+48.110901 +11.518500</from>
+      <to junction_name="Passauerstraße">+48.110649 +11.534150</to>
+    </location>
+    <events>
+      <event class="CONGESTION" type="CONGESTION_QUEUE">
+      </event>
+    </events>
+  </message>
+</feed>