Search found 41 matches

by Lesaid
13 Dec 2017, 4:29pm
Forum: On the road
Topic: Near miss on busy road - plea for good lights!!
Replies: 112
Views: 4760

Re: Near miss on busy road - plea for good lights!!

Problem two . I've seen that famous video before - so it wasn't a 'problem' to me any more! I don't remember seeing that particular one before, but it didn't catch me out. I think that's because my tactic was to watch the balls accelerating/decelerating, not the people (I was expecting they might a...
by Lesaid
13 Dec 2017, 4:21pm
Forum: On the road
Topic: Near miss on busy road - plea for good lights!!
Replies: 112
Views: 4760

Re: Near miss on busy road - plea for good lights!!

a 2005 amendment . thanks for the link and the clarification. Oh, here we go again! Pity the poor motorists, they can't be expected to drive so they can stop within what they can see to be clear if their eyesight is so defective that they can't see far enough at night(!) I agree with your implicati...
by Lesaid
13 Dec 2017, 3:01pm
Forum: On the road
Topic: Near miss on busy road - plea for good lights!!
Replies: 112
Views: 4760

Re: Near miss on busy road - plea for good lights!!

The legal minimum required to be roadworthy under RVLR perhaps? (I feel like a stuck record :wink: ). In setting the standard the governement is telling other road users it's bright enough for a cyclist to be seen by. It is undeniably an evidenced definition and I don't doubt that it was arrived at...
by Lesaid
12 Dec 2017, 11:19am
Forum: On the road
Topic: Near miss on busy road - plea for good lights!!
Replies: 112
Views: 4760

Re: Near miss on busy road - plea for good lights!!

You could see a candle from a few miles away (which I would consider to be at least a reasonable distance) but you couldn't possibly see it amongst the ridiculous shouty 'look at me' powered by hundreds of watts of 'waste' energy from infernal combustion engines. Perhaps that problem will be of lim...
by Lesaid
12 Dec 2017, 10:27am
Forum: On the road
Topic: Near miss on busy road - plea for good lights!!
Replies: 112
Views: 4760

Re: Near miss on busy road - plea for good lights!!

The best I've come up with is to do my own tests in the street outside my home with any lights I install. I lean the bike against something, with the lights on, then walk away from it and view it from a distance and from different angles. I'm looking to have it really visible but not dazzling. It's...
by Lesaid
12 Dec 2017, 9:47am
Forum: On the road
Topic: Near miss on busy road - plea for good lights!!
Replies: 112
Views: 4760

Re: Near miss on busy road - plea for good lights!!

For being seen and noticed lights need to be bright enough. Not too bright, just bright enough. And with a wide enough beam to be noticed from angles other than simply straight ahead. Sure - but, can anyone, even in a specialist forum like this one, give advice on just how bright 'enough' is, based...
by Lesaid
12 Dec 2017, 12:21am
Forum: On the road
Topic: Near miss on busy road - plea for good lights!!
Replies: 112
Views: 4760

Re: Near miss on busy road - plea for good lights!!

Someone more expert will be along in a while. However, "brightness" is a rather imprecise quantity. Some bike lights are heading towards very narrow beams, which can be quite "bright". Car lights by contrast tend to be much larger of course, so would need far more light emission...
by Lesaid
12 Dec 2017, 12:07am
Forum: On the road
Topic: Near miss on busy road - plea for good lights!!
Replies: 112
Views: 4760

Re: Near miss on busy road - plea for good lights!!

Unless you have some quite sophisticated measuring equipment you'll gather some anecdote, not evidence. well - I'm not equipped for lab-style optical measurements, but I can for example, vary the power provided to a light pretty accurately, and I can probably set up to calibrate the output of a lig...
by Lesaid
11 Dec 2017, 11:34pm
Forum: On the road
Topic: Near miss on busy road - plea for good lights!!
Replies: 112
Views: 4760

Re: Near miss on busy road - plea for good lights!!

Car and other lights are getting brighter too. The way forward is effective limits on the intensity, design and intrusiveness of lighting allowed to any vehicle. That makes a lot of sense. I was noticing while looking up the brightness and power consumption of car headlamps for an earlier post, tha...
by Lesaid
11 Dec 2017, 10:32pm
Forum: On the road
Topic: Near miss on busy road - plea for good lights!!
Replies: 112
Views: 4760

Re: Near miss on busy road - plea for good lights!!

Tell me though - how is that different in principle from the point I was making earlier about lights. The principle is that speed limits are an absolute maximum and that you should drive a motor vehicle to the conditions within that limit. In the real world when performing a manoeuvre, such as join...
by Lesaid
11 Dec 2017, 6:08pm
Forum: On the road
Topic: Near miss on busy road - plea for good lights!!
Replies: 112
Views: 4760

Re: Near miss on busy road - plea for good lights!!

The evidence of perceptual science informs us that it is the agent looking who accepts or suppresses the information. I.e. it is up to the driver to look properly, aware that his expectations of what might be there will directly affect whether or not (s)he sees everything that is there: Your mind i...
by Lesaid
11 Dec 2017, 5:08pm
Forum: On the road
Topic: Near miss on busy road - plea for good lights!!
Replies: 112
Views: 4760

Re: Near miss on busy road - plea for good lights!!

it's rationalisation of "common sense" prejudices and contradicted by other cognitive/perceptual evidence, so let's rely on the cold hard numbers. I meant to add - where formal research (the perceptual stuff I was referring to) contradicts 'cold hard numbers', you don't throw out either. ...
by Lesaid
11 Dec 2017, 4:37pm
Forum: On the road
Topic: Near miss on busy road - plea for good lights!!
Replies: 112
Views: 4760

Re: Near miss on busy road - plea for good lights!!

You're ignoring all the cognitive/perceptual evidence referred to earlier in this thread. Whatever!! No, I've replied to it in the earlier thread. I didn't want to rehash old points, but as you insist: in short, it's rationalisation of "common sense" prejudices and contradicted by other c...
by Lesaid
11 Dec 2017, 4:08pm
Forum: On the road
Topic: Near miss on busy road - plea for good lights!!
Replies: 112
Views: 4760

Re: Near miss on busy road - plea for good lights!!

mjr wrote:The worry is that it leads to the deaths of others


Exactly !!!

You're ignoring all the cognitive/perceptual evidence referred to earlier in this thread. Whatever!!

Have a good Christmas!

:)
by Lesaid
11 Dec 2017, 2:09pm
Forum: On the road
Topic: Near miss on busy road - plea for good lights!!
Replies: 112
Views: 4760

Re: Near miss on busy road - plea for good lights!!

"mjr" made all sorts of points. Just to note - I never said this specific type of accident was the most common kind, or even was common at all. But it is a kind of accident with potentially fatal consequences for both the cyclist and other road users caught up in a possible pile-up. I can ...