I had a traffic collision the other day. Someone not paying attention rear-ended my car.
I sure hope you are ok.  Traffic collisions often can cause injury, even death.
I was OK because I had my seat belt on and it was only about 15 mph. Still I was pretty mad at the guy for being so careless.
I am glad to hear about wearing the seat belt.  They can reduce injury by reducing the force of impact
I can't believe cars didn't use to have seat belts. They save so many lives.
 I know!  Now they have legislation to require the fitting of seat belts to cars.
That legislation is much-needed. I also like how car seats are required for small children.
Yes, it depends of the kids weight or age.  If they are below a cetain threshold, they must have a government approved safety seat