Yes, the cameras are fine. The limits may be occasionally stupid, but to not enforce them makes them more stupid.
I’m old enough to remember when no one respected the drink driving laws. Now it’s taken very seriously.
If somone can justify going faster than 70mph without using “because it’s fun” or “because I am capable of it” then please get in touch with your MP (or potential MPs with the election coming up) and campaign a bit. I suspect though that the upper limit won’t ever increase for entirely sound economic/ecologic/safety/national security reasons.
Lets not forget that we share the roads with idiots, the elderly, new drivers, cyclists, drunk pedestrians, deer and massively pretentious social climbers on horseback. Currently I can legally pass these things at a closing speed of up to 120 mph. That is plenty enough kinetic energy to hugely kill everyone involved. Capping this with an upper limit seems reasonable.
Ignoring advances in technology is also reasonable - my car has brakes that are plenty good enough to stop from 100mph. But it’s on the same road with people who can’t judge speed and who will pull out in front of me, so I’d rather we kept the closing speeds down a bit. Also I know a guy who hase a steam-powered road-legal traction engine - not everyone has a capable car, or the skills to use one. Also no one has the skills to predict a tyre blow out, or a track rod failure, or a catastrophic brake fluid leak, or a good hard sneeze, any of which can be fatal to someone somewhere even if you car is going as slowly as 30mph.
To focus so much on speed limits is dumbing down road safety to the lowest common denominator, unfortunately we share the roads with the dumb, and the unattended children of the dumb. We have a duty of care to either remove them from the roads or make the roads safe for them. A curfew on the stupid would fix this, but then so does slowing down a bit.
If it was a simple choice between cameras or traffic police I’d rather we had the police - enforcing the laws for which there are no automatic devices. But if tax, insurance, MOT, speed and traffic signal enforcement can be automated and self funding there really isn’t a logical argument against it. Really, there isn’t.
I’ve had to do a lot of defending on this thread. So far I’ve seen no justification for not enforcing the speed limits, just lots of excuses about how hard it can be to be absolutely certain of the speed limit under extreme circumstances on roads you are unfamiliar with. Get a satnav - it’s cheaper than a 6-point fine if you are genuinely worried about reading road signs. I’ve also seen some very flabby thinking about how those of us who are awesome should be allowed to self-regulate with referee decisions from the traffic police.
Those of you who are certain they can judge thier own safe speed limit (and by extention the safe speed you should be traveling in relation to all the other road users and their perceptions of your speed) - have a think about the Dunning-Krugar* effect, then a good hard think about the uncertainty of complex physical systems, then try to remember how you drove the last time you badly needed a wee.
The trouble with having speed limits we agree with is that the majority of drivers think they are better than average - it is impossible to agree on a safe speed limit when incompetant drivers won’t agree that they aren’t awesome. Some limits are stupidly high, some stupidly low, but on average most road users get to work on time and don’t die often.
People are idiots, all of us. We all speed, we all know why we shouldn’t, and we’d all do it more if we were less scared of getting caught.
* if you don’t know what this is, feel free to google it yourself rather than wasting my time asking