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Updated: 1 hour 46 min ago

Re: Have you been knocked OFF in a collision while cycling?

15 October 2014 - 12:00pm
661-Pete wrote:That's going to lead to a rather slanted set of results. What conclusions if any do you expect to draw from your survey?
I'm expecting inconclusive evidence about "have most forum participants been knocked off by motor vehicles?" and maybe some interesting evidence on how many participants have collided with anything.

Re: Lights: flashing, bright: article in Cycle

15 October 2014 - 11:37am
freeflow wrote:Only if Halfords and others stop selling headlight bulbs that are 40% brighter etc and manufacturers remove LED headlights which seem to produce much more glare even when they are dipped. ...
This may be because they are cold blue white (hence as far as you nighttime eye is concerned brighter than the lumens** rating says). There is no reason why LEDS / HIDS cannot be warmer whites like raw halogens: it seems a failure of the UN-ECE that they have not limited the blue component of headlamps. Warmer white cycle lamps would also be a good idea.

**lumens etc are based on the daylight colour sensitivity of the eye

I am puzzled by the claimed distance judgement issue with rear flashing lamps* :---
eg driver on dipped beam sees flashing red lamp ahead, so probably a cyclist, even assuming they are negligently and incorrectly driving faster than they can see according to their dipped beam, they should surely be slowing down and will have the distance at which the cyclists reflector(s) light up to correct any distance error, and failing that the distance at which their beam illuminates the cyclist. Is there any non-anecdotal evidence of this difficulty? I wonder if the distance judgement complaints come from the slower 1-2Hz lamps (faster is better I thought, but the legal upper limit 4Hz is quite low compared to what used to be available: I used to think 7Hz was best).
Why did the Dft not publish their evidence on flashing vs steady?

*I think bright flashing front lamps serve no purpose against their irritation factor, and should be deprecated/their legal permission phased out.

gplhl wrote:...I think you should be able to dip them like vehicle lights. ...
But BS and German approved front lamps have a dipped beam pattern by default or do you mean that cyclists should have the option of a lamp that switches between a main and dipped style beam just like motor vehicles?

Re: Cycling Eutopia ?

15 October 2014 - 11:36am
I'm near the Manchester Ship canal and can't understand why it doesn't have a cycle route all the way along it, at least the Bridgewater canal has the Bridgewater way slowly being upgraded next to it, still not sure they've made it wide enough if it were to be a main traffic free cycling route into the city centre and Trafford Park.

Re: Have you been knocked OFF in a collision while cycling?

15 October 2014 - 11:31am
Had various near misses which I've either taken measures to prevent a collision or I've determined the possibility of a collision before it has become one and taken action.

The only real collision is with a pedestrian on a shared path who suddenly walked into my path. I was only doing probably 8-10mph but enough for me to come off and the pedestrian to no-doubt suffer from bruising for a while.

Re: Cycling Eutopia ?

15 October 2014 - 11:30am
Postboxer wrote:Drain the canals! Traffic free, level routes, no junctions with motor vehicles, right into city centres!
My current theory is that you don't even need to drain them: just build bike routes alongside waterways and current/former railways. This can also give us no-motor-traffic, fairly level routes, few junctions with motor vehicles and access to urban centres. I was contemplating places in England which have higher-than-average cycling and many of them (Cambridge, York, Norwich, Gosport, Bristol... even my local King's Lynn) have this, then I pondered why and realised waterways and railways don't have many side roads, plus their routes are fairly well-known to non-cyclists so navigation becomes more obvious.

This effect seems to have been overlooked in the popular "failures" (still above average, but less than people expect given the infrastructure) of Milton Keynes and Stevenage. In MK, cycleways like the Newport Nobby in MK are rare and it's more common for them to be lower-status poorer-surface greenways like most of the one alongside the Grand Union. In Stevenage, I don't remember any major waterways and it looks like a cycleway runs alongside the railway for only 500m or so past the station, then wiggles away.

Re: Cycling Eutopia ?

15 October 2014 - 11:08am
Drain the canals! Traffic free, level routes, no junctions with motor vehicles, right into city centres!

Re: Cycling Eutopia ?

15 October 2014 - 10:37am
Hilly, cold Norwich has more cyclists than flatter, warmer King's Lynn, 50 miles west under the same highways authorities. I suspect at the UK's low cycling levels, these aren't significant limitations, but I'd love to see that reference if someone can find it.

Re: Cycling Eutopia ?

15 October 2014 - 10:09am
Hilliness does make a difference to people's propensity to cycle, as does weather. Statisticians have demonstrated it pretty clearly (sorry no citation to hand). Nevertheless if you've seen how much cycling they have in hilly Swiss or Norwegian cities, both with much bigger hills and worse weather for most of the year than Birmingham, one realises that one can do a lot better than Birmingham. I spent a year cycling around Birmingham and the West Midlands, including 6 miles each way to work, and mostly the ups and downs were pretty small, gentle and infrequent.

Re: Have you been knocked OFF in a collision while cycling?

15 October 2014 - 1:57am
mjr wrote:Please pick the first-listed option which applies to any of your incidents. That's what I was trying to express in the first paragraph. Sorry it wasn't clear. I've edited the question because that appears before the explanation.

That's going to lead to a rather slanted set of results. What conclusions if any do you expect to draw from your survey?

Re: Clipping and running

14 October 2014 - 11:26pm
To those of you who feel that the rider behind is responsible for the crash, do you also feel that he is responsible for the ones who then ran into him? Or is that their fault for riding too close?

I can see myself in the position of any of the riders there and it is only as the "guy in front" that I would say my actions caused the crash, I would feel that I had not accelerated into the gap that was there and had instead side-swiped the other cyclist. I would feel quite guilty about having made such a mistake, even though is was a miscalculation rather than being bad.
If I was one of the following riders that crashed into the first downed rider, I would accept my guilt as it is ultimately your duty to stop in the distance you have. However it is a common agreement on these sorts of ride to take that risk for the benefits of drafting.
I just can not see how to blame the rider who was sideswiped.

Re: Clipping and running

14 October 2014 - 11:18pm
It does cut off very quickly, people are still falling in the distance, I wonder why.

Re: Clipping and running

14 October 2014 - 11:03pm
It's interesting reading peoples different interpretations of the video. When I watched the Youtube clip (in expanded mode and with the sound on max) I saw the rider in front waiting after he indicates to pull out. The rider behind then responds by saying "go ahead, go ahead" at which point the rider in front ... well, goes ahead and pulls out, taking out the guy behind.

EDIT: I'd say most of the blame falls on the rider behind, although some might fall on there rider in front. Also the rider in front rides off aware that something has happened which seems poor.

Re: Clipping and running

14 October 2014 - 10:44pm
We don't know why the front rider needs to move sharply - he gives an audible warning in addition to a hand signal. The second rider shows no response to the first rider's actions and yet he too must be able to see what's ahead, so should he be overtaking at this point and shouldn't he be braking or moving out? However his front wheel does appear to be almost alongside the first rider so by which time it's probably too late. From that video you can't draw any conclusions let alone say it's 100% any rider's fault. You don't have enough information, and shows just how easy it is to jump to conclusions.

Re: Clipping and running

14 October 2014 - 8:39pm
The mirror may have been part of the problem - objects in them tend to look further away than they really are.

Re: A ride too far

14 October 2014 - 7:12pm
Very good some of my old haunts, I have walked the shingle bank loads of time carrying all my fishing gear and one night a few years back I carrired all that plus a 30 lb conger as well.

A ride too far

14 October 2014 - 7:05pm
How far is a ride too far?
I found out when I upped my regular Sunday semi off road ride from 25-30 miles to a whopping 55 and then missed the ferry home.

Re: Cycling Eutopia ?

14 October 2014 - 6:58pm
Ayesha wrote:
If there were no hills in Birmingham, we'd have the same problem with too many cyclists.


Re: Sick people

14 October 2014 - 6:18pm
I once did a job for a woman who'd had someone commit suicide by jumping off a motorway bridge and landing on the bonnet of her car
I'll bet she's a bit nervous when she sees someone stood on a bridge she's driving under

Re: Have you been knocked OFF in a collision while cycling?

14 October 2014 - 5:40pm
The second time in eight years of having an 'off' due to someone else's incompetence was last week.

A student on a bicycle riding with earphones along a segregated cycle path. He wasn't paying attention until he heard my shouting, and then he turned into me instead of turning away. Idiot.

Re: Cycling Eutopia ?

14 October 2014 - 5:35pm
If you Google "Hills in Copenhagen", you get Copenhagen, Louisiana, USA.

Why? Because there's NO hills in Copenhagen, Denmark.

If there were no hills in Birmingham, we'd have the same problem with too many cyclists.


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