The Question

I had a little deliberation with the question I was given. I was pretty thankful it wasn't too contentious, but the initial structure of it irked me.
"Speed cameras: revenue raiser or road safety measure?"

I tried to reform it in a way that sounded a bit smoother.
"Do you think speed cameras are there to prevent accidents or just to raise revenue?"

I was hoping the "just" wasn't influencing people too much in to saying yes, its a scam, and it didn't. People held their opinions, I believe.

I also came a across the problem of follow up questions. I felt too nervous to think of anything on the spot, after a few interviews I did a rehearsal beforehand to help remember what I might say to help them explain. Although "could you explain that" worked pretty well.