atlas_shrugged wrote:One life costs the country around a million pounds but I would make this higher at around 10 million pounds.
Where are you getting that from? I'm sure Norfolk's public health department told me a road death cost the economy £14m. Interesting how that differs from the "Value of a Prevented Fatality" but I guess it may have something to do with how you can prevent the same fatality lots of times, whereas a death normally only happens once.
I'm not sure Cambridgers are high risk lab rats when they seem to be simply importing known-good treatments from abroad.
So what would be the benefits of a Stevenage style roundabout:
* Enhanced safety especially for vulnerable users e.g. school pupils and hospital patients
Sadly, that wouldn't be the perception, especially if "Stevenage style" means not being able to see through the underpass from a good distance back. I'm sure I don't need to list examples of underpasses filled in and replaced by push-and-beg traffic light crossings because people were scrambling over the carriageway rather than risk finding out who was lurking under it.
* Vision zero definitely achieved at this dangerous roundabout for pedestrians and cyclists
* Under-road ducting for utilities available so no need to continually dig up the road/roundabout
Won't that just mean they continually dig up the underpass cycleway or footway instead? I'm not sure that's a good thing because cycleway/footway repairs always seem to be done worse than carriageway ones.
* The route could be used by young children and vision impaired people
Why can't the current one?
I note the design for cyclists involves some tight turns and I estimate some of these are 2 meters turning radius. Is 2 meters compatible with LTN 1/20? Table 5-1 is not that clear about tuning radius. Is 2 meters OK or not?
Not really. Table 5-1 is for "low speed manoeuvres such as access to cycle parking" and even that says 2.5m minimum not to exclude tricycles. The relevant table is 5-7 which gives a minimum radius of 4m for a 10kph transit and 15m for 20kph.
I have to say I felt reasonably safe on the roundabout on a bike. I was constantly looking right then left then right then left etc. But this was better than having to check 180 degrees behind while negotiating 2 lanes of busy roundabout traffic. So my guess is this is safer, but the statistics will speak for themselves.
Do you know what the past injury record was?
Thanks for posting some practical experience. All my appointments in Cambridge keep getting converted into telemeetings.