*slowing down or stopping on a MUP or street----- NO

* Tuning right or left - on a MUP? No

* Turning right or left on a street/highway? Yes at times, I want to let close cars to know where I am heading so they can react accordingly.

* Changing lanes? No, can not think I ever really change "lanes"

Sometimes, never or always? So sometimes I do on the road and I would have to say never on the MUP I use from time to time.

98% if rides are solo too.