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Signed-off-by: Pierre R. Mai <pmai@pmsf.de>

osi_logicallane.proto

@@ -886,12 +886,19 @@ message LogicalLane
             // The starting point of the traffic rule validity on the lane.
             // Must be in range [\c sStart,\c sEnd] of the reference line.
             //
+            // Note: The traffic rule applies only to traffic with notional
+            // direction of travel from the start_s coordinate towards
+            // the end_s coordinate. For monodirectional lanes this
+            // must match the direction of travel as specified by the
+            // move_direction field of the logical lane. For bidirectional
+            // lanes this allows the specification of separate rules for
+            // each direction of travel.
+            //
             optional double start_s = 1;
 
             //
             // The ending point of the traffic rule validity on the lane.
             // Must be in range [\c sStart,\c sEnd] of the reference line.
-            // Note: Should always be greater than the starting point.
             //
             optional double end_s = 2;