diff --git a/planning/behavior_velocity_traffic_light_module/src/scene.cpp b/planning/behavior_velocity_traffic_light_module/src/scene.cpp
index 83443bc726bbd..6defb79e9984d 100644
--- a/planning/behavior_velocity_traffic_light_module/src/scene.cpp
+++ b/planning/behavior_velocity_traffic_light_module/src/scene.cpp
@@ -353,7 +353,7 @@ bool TrafficLightModule::isPassthrough(const double & signed_arc_length) const
     delay_response_time);
 
   const bool distance_stoppable = pass_judge_line_distance < signed_arc_length;
-  const bool slow_velocity = planner_data_->current_velocity->twist.linear.x < 2.0;
+  const bool slow_velocity = planner_data_->current_velocity->twist.linear.x < 1.0;
   const bool stoppable = distance_stoppable || slow_velocity;
   const bool reachable = signed_arc_length < reachable_distance;