Our Government has proposed that the speed limit on UK Motorways be increased to 80 miles per hour. The speed limit on our motorways, as on all dual carriageways has been 70 mph for over forty years and there are differing views about the value and wisdom of an increase.
Unsurprisingly opinions vary on the desirability of this change and although biking organisations all seem to be welcoming the proposal, there are of course objectors, including the usual crop of blinkered obsessionalists. There is an organisation called Brake for example which seems to think this is a selfish move by speedsters who want to put other people’s lives at dire risk which will cause “carnage” and that we should be doing everything we can to persuade people to get off the motorways and on to trains and buses. Back to having a man carrying a red flag ahead of every motorised vehicle then.
The protagonists point out the economic gains to be had from shorter journey times will amount to as hundreds of millions of pounds, which strikes me as a bit fanciful, but they also point out that modern vehicles have vastly better brakes than 1960s vehicles and these out-perform the stopping distances in the Highway Code by a considerable margin, so the extra 10 mph, which in reality many drivers are already doing anyway, will not convey much extra risk.
People might claim to be experts but I’m not convinced there are any real experts on this subject and your opinion and mine might be just as good and valid as anyone else’s. We, or rather our politicians on our behalf, will either have to take the risk of raising the motorway speed limit to see if it can be done without too much impact on road safety or not. The idea that it will cause carnage on the motorways if we do this is clearly very silly.
And since the decision whether to increase the limit is a political one, all the other factors which influence political decisions come to bear too and the chances of this actually happening might be fairly low. Our democratic system is such that the politicians who make the decision whether to proceed with this proposal will end up doing what they feel will give them the best prospect of being re-elected, especially if that is becoming uncertain. Our best hope of what might be a perfectly reasonable attempt to strike a better balance between risk and benefit on our motorways could easily fall victim to the vagaries of the political calendar and other factors completely unrelated to the issue.
Speed is undeniably a factor in some accidents, so the possibility that increasing the motorway speed limit to 80 mph could lead to more motorway accidents and more deaths needs serious consideration. We’ve had a 70 mph limit since 1964, so a very long time, so making a change could have an adverse effect – just as a reduction to 60 mph would be a disruptive change and that alone would probably adversely affect road safety for a while. Adjusting the speed limit either way could lead to an increased number of rear end shunts.
If the economic gains are uncertain (if not fanciful) and the any change is likely to rock the boat and increase accidents at least for a while, the “ain’t broke, don’t mend it” argument has some attractions, as does the idea that the highly congested nature of our motorways (compared with European motorways) makes raising the upper limit too risky. Will a limit of 80 mph work on the chronically congested M6, where average traffic speed are often much lower than 70 mph? Will anyone gain from the legal opportunity to accelerate briefly, but only briefly, up to 80 mph? Without much more extensive variable speed limit sections to calm things down when necessary, which have been successfully introduced on busiest sections of the M25 and the M42 not be much more effective in improving journey times?
But on the other hand in the special case of motorways which are, statistically speaking, the safest part of our road network, it can be argued that a higher overall speed limit, especially in combination with variable lower speed limits would be a safer way of doing things as well as well as improving traffic flow and allowing faster journeys. And it probably would improve journey times significantly at less busy times and on less congested sections of the motorway system, so why not give it a try? continues………