Yes, I know the Police can nick you for Dangerous Driving, hence my example pointing out that whilst doing 70mph on a rainy, windy, unlit dual carriageway etc might be legal in terms of the speed limit, but could definitely be classed as "inappropriate speed for the conditions" viz:
* * * * *
What is 'Dangerous driving'?
A person drives dangerously when:
* the way they drive falls far below the minimum acceptable standard expected of a competent and careful driver; and
* it would be obvious to a competent and careful driver that driving in that way would be dangerous.
* * * * *
But that doesn't mean that pointing out the difference between "breaking the speed limit" and "using inappropriate speed for the conditions" is a poor argument.
"What you're advocating there is speed limits that can and do change at arbitrary times of the day (i.e. when the conditions change). "
You mean like the "Active Traffic Management" that happens on the M25 and other motorways where speed limits can and do change at arbitrary times of the day (i.e. when the conditions change)!
"It's *your* responsibility as a motorist to drive safely within that limit. If you want to ignore it you are free to do so. There are of course consequences. As an adult you should accept that and act accordingly. Having it both ways is for the kids."
As an adult and, more relevantly, as a member of the IAM, I am well aware of my responsibilities on the road and the requirement to use the road safely and one of the simplest ways to fail an IAM test is to act in a way that causes another road user to have to change their driving or riding plan.
However blithely (or blindly) sticking to limits whilst ignoring other factors is not the mark of an Advanced Road User either. If you're in a 60 limit, following a car doing 52mph and you want to make progress by passing them, you pick a clear piece of road and complete your overtake in a safe and timely manner, but whilst you're doing this you do *not* want to be looking down at your speedo to ensure you don't go over the limit since you're a) not watching the road ahead and b) if you stick to the limit that will increase the "danger time" you're spending in the opposite lane meaning you're increasing the risk of encountering an on-coming vehicle.
Therefore, to effect a safe and timely overtake, you may have to "break the law" by exceeding the speed limit, but you do that in the knowledge that you have done so in a way that will not cause a hazard to another road user.