We get lots of through traffic on our little residential road from drivers guided by apps. They do not stick to the speed limit either and roar past at 40mph i

We get lots of through traffic on our little residential road from drivers guided by apps. They do not stick to the speed limit either and roar past at 40mph in a 20moh zone. And pollute the air and create noise. As far as I'm concerned, LTNs for residential streets make a lot of sense.