How can my family stay safe while talking our dogs out on walks?

My mom and sister take their dogs out on walks aroundour neighborhood, but as of lately they frequently bringup strange behaviors when cars are driving or strangers walking by. I had to run to the door the other day because my sister felt like a car stopped at an end of the road in a weird way.

Im only informed so much by telling them about a few distractions people sometimes use. That and not to let people take pictures of them. My sister had a incident at work were someone in a pickup took a picture of her while closing the store, so I had to explain why that was much more serious than it seems.

Even as a guy I feel uncomfortable when I notice tinted cars passing by on foot. I feel like I only know what tiktok and domestic violence cases show. How can we be more safe today?