Denis McMahon:
If we want to deploy technology to optimum effect, we need to ensure that EVERY road carries a SENSIBLE speed limit. I don't think this is unreasonable. My dealings with our county council suggest that it has information on pretty well every road within its area, and carries accident statistics and all kinds of statistics..
There are many country lanes where the default 60MPH speed limit is far too high. But adding speed limits would require someone to inspect every road. That would mean thousands of Traffic Regulation Orders being raised. Many more thousands of speed limit signs would need to be installed, if you allow for all the reminders that have to be installed at regular intervals.
And nobody would enforce the new speed limits anyway.
Maurice Dixon:
My experience on M42, M25, etc, is that sensible variable speed limits at certain times, or traffic/accident conditions, helps the traffic flow.
Plus there's a huge amount of research evidence, modelling evidence, mathematical proof and the M3 to M40 section of the M25 that shows they are very effective at stopping bottlenecks...which was why they were introduced in the first place. Unfortunately fluid dynamics issues often don't make sense at first glance, it took a while for the reason they work to be explained to me in a way that made sense...
We're about to take you to the IET registration website. Don't worry though, you'll be sent straight back to the community after completing the registration.
Continue to the IET registration site