What you want to do instead is use calming signals and try to do something to calm and attract the dog. Lip licking, yawning, feigning like youre eating food off the ground are such signals. Some other things you can try: Have a crinkly bag like a potato chip bag with treats inside it (keep it in your car, it just needs to make noise when you crinkle it) When you see a stray dog, get out of your car and watch the dog out of the corner of your eye