How do I train my two stray dogs to not attack people?

Hi, I have two stray dogs at my apartment. I take care of it and pamper them a lot. As a result, whenever I go near them they jump in excitement and attack pedestrains and run behind cars and two wheelers. It's very frightening for the ones who get attacked. I am not able to understand their behavior as I have never had a dog at home. I also hold a stick and act like I'm scolding them to make sure they do not repeat it, but eventually they'll end up chasing cars and pedestrians. Please help. How do I train them to stop that ?