diff --git a/simulation/simple_sensor_simulator/src/vehicle_simulation/ego_entity_simulation.cpp b/simulation/simple_sensor_simulator/src/vehicle_simulation/ego_entity_simulation.cpp
index 4083b616e55..3d09f35dcca 100644
--- a/simulation/simple_sensor_simulator/src/vehicle_simulation/ego_entity_simulation.cpp
+++ b/simulation/simple_sensor_simulator/src/vehicle_simulation/ego_entity_simulation.cpp
@@ -473,6 +473,7 @@ auto EgoEntitySimulation::fillLaneletDataAndSnapZToLanelet(
     traffic_simulator::helper::getUniqueValues(autoware->getRouteLanelets());
   std::optional<traffic_simulator_msgs::msg::LaneletPose> lanelet_pose;
 
+  // the lanelet matching algorithm should be equivalent to the one used in EgoEntity::setMapPose
   const auto get_matching_length = [&] {
     return std::max(
              vehicle_parameters.axles.front_axle.track_width,
diff --git a/simulation/traffic_simulator/src/entity/ego_entity.cpp b/simulation/traffic_simulator/src/entity/ego_entity.cpp
index a9fb5ac3fc1..aea0e89b002 100644
--- a/simulation/traffic_simulator/src/entity/ego_entity.cpp
+++ b/simulation/traffic_simulator/src/entity/ego_entity.cpp
@@ -275,6 +275,8 @@ auto EgoEntity::setMapPose(const geometry_msgs::msg::Pose & map_pose) -> void
 {
   const auto unique_route_lanelets = traffic_simulator::helper::getUniqueValues(getRouteLanelets());
   std::optional<traffic_simulator_msgs::msg::LaneletPose> lanelet_pose;
+
+  // the lanelet matching algorithm should be equivalent to the one used in EgoEntitySimulation::fillLaneletDataAndSnapZToLanelet
   const auto get_matching_length = [&] {
     return std::max(
              vehicle_parameters.axles.front_axle.track_width,