I definately agree better road markings are much better than speed cameras, but then road users need to be educated on how to read them...for example you'd be surprised how many people realise there are actually 2 different "curvy road signs"
To be fair, in Swindon, I went on my bike along with my mate in his V6 Laguna and to be fair we were ragging it about a bit, there are no speed cameras in Swindon as they removed them all (and accident rates have NOT GONE UP), and instead they had undercover cars who pulled up next to me and said that I should slow down or get arrested...knee down round a roundabout infront a policeman, life target achieved lmao
But that's the thing, a policeman, or rather a trained and nice traffic officer in his Vectra or Insignia, (the knobs are the ones in Astras around here) these can understand that perhaps on a empty motorway why one was doing 120mph at 4am, or why you're doing 70mph down a national limit road which is wide enough for dual carridgeways in both directions.
Cameras operate under the effect that speed kills. No, it doesn'. Speed is a great thing, an amazing thing. It's the fact alot of people don't understand how to use speed safely, they don't understand that it's not OK to go through a sleepy little 30mph village at 60...or to take a completely blind, narrow corner sideways at 50..
Being a motorcyclist and speaking to bike coppers, most of them operate on the "common sense of safety" principle as oppposed to actual speed limits..most traffic cops do the same but then you have some arsey ones, but ain't life just a bunch of roses...