JT wrote:
If we really want to measure true public opinion we need to deliver the true facts to the public first, so that they can make a balanced judgement.
Perhaps the first few questions should be
Are you aware that after several decades of imrpovement the UK's accident rate has failed to improve significantly in the last 10 years?
Are you aware that the first cameras were installed about the same time the rate of improvement slowed?
Do you think that there might be a causal relationship between the two events, or do you believe it's a coincidence?
If you think that they are linked, which of the following do you think might explain it (followed by a list including SafeSpeed favourites such as increased speedo checking, fewer trafplods about to nick drunk drivers, avoiding roads with cameras etc
Well, if they can ask leading questions why can't we?

JT wrote:
I am beginning to think that the whole "public opinion" should be avoided!
Where has it got us so far? Local public opinioin has got Gatsos installed in villages to "do something about all the speeders" and ended up ticketing half the locals. Informed public opinion is one thing, uninformed/propaganda induced public opinion is another.