I agree some of the speed limit changes are silly/poorly thought out (in that changing the speed limit doesn't actually change drivers behaviour) - the studies suggest little difference in the accident rates but there is some leanings towards a decrease in the fatality rate (if the limits are observed).The Greens, like UKIP, have some crazy policies when you actually read their manifesto.
* Stop/reverse all airport expansions and ban planes flying at night and well as banning all short-haul flights within the UK
* Reduce speed limits to 20 mph on all but main roads/A Roads and Motorways.
* Reduce motorway speed limit to 55 mph, reduce A Road speed limit to 40 mph.
* Support in principle a new north–south high-speed line, which would reduce the number of short-haul flights within the UK (This isn't crazy but given they've since opposed HS2 it just goes to show they can be Nick Cleggs too).
* Unlimited immigration even if it harms the economy.
* Increase over seas aid by 40%
What I don't like is the way manifestos make statements with a degree of certainty - what they should say is, "conduct a wide range study on speed limits & act accordingly based upon the data to reduce death rates in the UK".
The aid budget is very small to begin with, so a 40% increase isn't as much as it sounds. I agree some aspects are stupid, like any political party - but they are the only party remotely speaking the right language on say crime & punishment (rehabilitation focused), the decriminalisation of drugs etc.

