The great speed limit debate.  I had a useful, and VERY thorough conversation with officers of the City Council a couple of weeks ago.

We discussed such aspects as:  (1)  who will police speeding cyclists;  (2) how will statisticians interpret the possible INCREASE in traffic accidents during the pilot scheme, as pedestrians misread vehicles' intentions;  (3)  what will be the realistic reactions of local residents after the major disruption of all that new signage and road-marking;  (4)  might someone write a handy app, for road users to download, which 'silently' gathers anonymous movements data (instead of relying on labour-intensive monitoring, or crude and posthumous accident stats);  (5)  within a decade, will there be even further major disruption (and cost!) if the national urban speed limit is 'found to be better' at 20mph instead of 30mph.

I missed making a written contribution to the consultation deadline, but noted that there is another way.  I've yet to read all that.  Perhaps you'd like to?

Of course, I don't mean that literally.  But see this article, which reinforces the 'sound' advice in the excellent short film "Blue Light Aware".