RuntimeError: Responding error from function get_light_boxes: Actor could not be found in the registry

[nuomizai]

When I ran the code light_box = _actor.get_light_boxes(), an error occurred as

RuntimeError: Responding error from function get_light_boxes: Actor could not be found in the registry.  Actor Id: 370

The _actor was a traffic light actor which is obtained by CarlaDataProvider.get_next_traffic_light(self._vehicle) in leaderboard project. The detailed implementation of get_next_traffic_light is as follows:

@staticmethod
    def get_next_traffic_light(actor, use_cached_location=True):
        """
        returns the next relevant traffic light for the provided actor
        """

        if not use_cached_location:
            location = actor.get_transform().location
        else:
            location = CarlaDataProvider.get_location(actor)

        waypoint = CarlaDataProvider.get_map().get_waypoint(location)
        # Create list of all waypoints until next intersection
        list_of_waypoints = []
        while waypoint and not waypoint.is_intersection:
            list_of_waypoints.append(waypoint)
            waypoint = waypoint.next(2.0)[0]

        # If the list is empty, the actor is in an intersection
        if not list_of_waypoints:
            return None

        relevant_traffic_light = None
        distance_to_relevant_traffic_light = float("inf")

        for traffic_light in CarlaDataProvider._traffic_light_map:
            if hasattr(traffic_light, 'trigger_volume'):
                tl_t = CarlaDataProvider._traffic_light_map[traffic_light]
                transformed_tv = tl_t.transform(traffic_light.trigger_volume.location)
                distance = carla.Location(transformed_tv).distance(list_of_waypoints[-1].transform.location)

                if distance < distance_to_relevant_traffic_light:
                    relevant_traffic_light = traffic_light
                    distance_to_relevant_traffic_light = distance

        return relevant_traffic_light

Does anyone know where the problem is?

[chingolo7278]

I have the same issue, I can't use the function get_light_boxes "RuntimeError: Responding error from function get_light_boxes: Actor could not be found in the registry. Actor Id: 16" Does anyone has an example of this function?

[KevinLADLee]

I think a conditional sentence should be added here.

https://github.com/carla-simulator/carla/blob/bb4b95e0bc43d25be6f3b54713ac32d8465b1586/Unreal/CarlaUE4/Plugins/Carla/Source/Carla/Server/CarlaServer.cpp#L1645

if (CarlaActor == nullptr)

After modifying this line, the function works now.

[100rab-S]

I have the same issue. What is the solution for this? Other methods work on the trafficLight object. It is issue only with get_light_boxes. Carla Version: 0.9.13

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[brscholz]

I think a conditional sentence should be added here.

https://github.com/carla-simulator/carla/blob/bb4b95e0bc43d25be6f3b54713ac32d8465b1586/Unreal/CarlaUE4/Plugins/Carla/Source/Carla/Server/CarlaServer.cpp#L1645

if (CarlaActor == nullptr)

After modifying this line, the function works now.

This seems to be the solution indeed, why did you get a downvote on that? 😄

[lsangreg]

@KevinLADLee

I think a conditional sentence should be added here.

https://github.com/carla-simulator/carla/blob/bb4b95e0bc43d25be6f3b54713ac32d8465b1586/Unreal/CarlaUE4/Plugins/Carla/Source/Carla/Server/CarlaServer.cpp#L1645

if (CarlaActor == nullptr)

After modifying this line, the function works now.

How is this supposed to influence ./CarlaUE4.sh ? I modifed it but I get the same error

[lsangreg]

@Axel1092 Do you have any clue on that issue? Is still unsolved for me, with carla 0.9.12

        actor_list = self.world.get_actors()

        traffic_light_list= actor_list.filter('traffic.traffic_light*')
        for tl in traffic_light_list:
            
            try:
                light_box=tl.get_light_boxes()
                print(light_box)
            except RuntimeError:
                print("Actor not found")
                pass
            

The function is not working for each traffic light in the map.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.