diff --git a/README.md b/README.md
index ae16645..1e782ae 100644
--- a/README.md
+++ b/README.md
@@ -116,6 +116,10 @@ The DRS module's major version (e.g. 14) corresponds to the MATSim version it is
 
 ### Config Parameters
 
+> [!note]
+> `network.xml` is assumed to use a meter-based coordinate reference system.
+> If this is not the case take *meter* and *kilometre* in the parameter names (and output such as pkm) with a grain of salt.
+
 [config_drs.xml](data/floridsdorf/config_drs.xml) serves as a complete example on how to configure a DRS scenario.
 Note, that other modules must be configured in a specific way as well, e.g. `qsim`.
 
@@ -180,7 +184,7 @@ and can also be configured via the relevant parameters in the `drs` config group
 The following output files are additionally created in the MATSim output directory:
 
 - `drs_rider_request_stats.csv/png`: evolution of number of matched and unmatched rider requests
-- `drs_vkt_stats.csv/png`: evolution of distribution of vehicle kilometers traveled by motorized individual transport between
+- `drs_vkt_stats.csv/png`: evolution of distribution of vehicle kilometres traveled by motorized individual transport between
   - DRS travel, i.e. parts of a DRS driver's trip with an actual rider
   - before and after DRS, i.e. parts of a DRS driver's trip to the pickup point / after dropping off the rider
   - individual travel, i.e. regular non-DRS car trips or unmatched DRS driver trips
diff --git a/src/main/java/at/ac/ait/matsim/drs/analysis/VktStatsControlerListener.java b/src/main/java/at/ac/ait/matsim/drs/analysis/VktStatsControlerListener.java
index bf10c8f..9154340 100644
--- a/src/main/java/at/ac/ait/matsim/drs/analysis/VktStatsControlerListener.java
+++ b/src/main/java/at/ac/ait/matsim/drs/analysis/VktStatsControlerListener.java
@@ -107,9 +107,9 @@ private void collectVktStatsInfo(AfterMobsimEvent event) {
             String[] categories = iterationHistories.keySet().stream()
                     .map(Object::toString)
                     .toArray(String[]::new);
-            StackedBarChart chart = new StackedBarChart("Motorized Private Vehicles Kilometers Traveled Statistics",
+            StackedBarChart chart = new StackedBarChart("Motorized Private Vehicles Kilometres Traveled Statistics",
                     "iteration",
-                    "Kilometer", categories);
+                    "Kilometre", categories);
 
             double[] drsValues = iterationHistories.values().stream()
                     .mapToDouble(map -> map.getOrDefault(DRS_TRAVEL, 0.0))
diff --git a/src/test/java/at/ac/ait/matsim/drs/optimizer/RequestZoneRegistryTest.java b/src/test/java/at/ac/ait/matsim/drs/optimizer/RequestZoneRegistryTest.java
index 5f1d964..a75e5dc 100644
--- a/src/test/java/at/ac/ait/matsim/drs/optimizer/RequestZoneRegistryTest.java
+++ b/src/test/java/at/ac/ait/matsim/drs/optimizer/RequestZoneRegistryTest.java
@@ -43,6 +43,11 @@ public void beforeEach() {
         request3 = req(3, 1674);
     }
 
+    @Test
+    public void testAllRequestsWithinDistance() {
+
+    }
+
     @Test
     void testGetZoneIdForNeighboringRequests() {
         assertSame(RequestZoneRegistry.getZoneId(request1, true, zoneSystem),
@@ -108,6 +113,10 @@ void testFindNearestRequests() {
                 zoneRegistry.findNearestRequests(link(1541).getFromNode()).count());
     }
 
+    public DrsRiderRequest req(int linkId) {
+        return DrsTestUtil.mockRiderRequest(linkId, 8 * 60 * 60, link(linkId), null);
+    }
+
     public DrsRiderRequest req(int id, int linkId) {
         return DrsTestUtil.mockRiderRequest(id, 8 * 60 * 60, link(linkId), null);
     }