Is it possible to add new classes to pre-trained models in YOLOv8?

I am using YOLOv8 pretrained models for object detection and tracking. The pre-trained model has been trained on COCO dataset by them and has 80 classes (including a "Traffic Light" class). I want to add 3 additional classes for detecting traffic lights:

1. RedLight
2. YellowLight
3. GreenLight

I have created labelled images (with images and labels folders) for these 3 new classes.I want to know if it is possible to simply add these 3 new classes to the existing …

computervision dataset detection light pre-trained models pretrained models them tracking traffic traffic lights yolov8