We weren't supposed to make Traffic Stops in unmarked cars. We were to call a marked unit and let him make the stop. It had better be something important, Fail To Stop And Render Aid (wreck), DWI or other serious event. I never had it come up. I did go make stops for others who'd id'ed some serious violation.
I was sworn in as a Texas Cop in 1977, I guess I'll be some kinda Cop until they bury me.