CityCyclingEdinburgh Forum » Infrastructure

slow flashing front light

(10 posts)

No tags yet.


  1. algo
    Member

    First off apologies if this has been discussed before (no doubt) - but I thought I would make an observation about flashing front lights.

    Yesterday evening (in the dark) I turned left out of Millerfield Place into Melville Terrace. I looked to my right and saw nothing coming so proceeded to make the turn out of the junction. After I had started to accelerate I noticed that in fact there was something coming - a bicycle with a very slowly blinking front light which I pulled out in front of. Apologies to that cyclist - especially if I caused you to brake.

    The problem is that the phase of the light when it was off coincided with my look right and decision to proceed - I genuinely couldn't see the cyclist in the dark. No doubt this is partly inadequate observation by me, but also I think it may highlight a potential problem with such lights. It is why I favour one steady, one blinking light on front and rear.

    Posted 10 years ago #
  2. Cyclops
    Member

    I've seen a few of these lights about and some seem to have very long phases eg. off for a second, on for a second. If you're riding towards them they "disappear" when the light goes off which isn't a huge problem if they're roughly where your brain thinks they should be when the light comes back on. However, if they make a turn whilst unlit it causes a momentary panic as you think "How on earth are they there?"

    I've seen people use them on unlit roads/paths and I often wonder how many potholes, branches, etc. they ride into when there lights off.

    Posted 10 years ago #
  3. Morningsider
    Member

    I saw one of these the other day in the meadows. Pretty sure they don't meet the legal requirement that flashing bike lights have to flash between 60 and 240 times per minute.

    Posted 10 years ago #
  4. algo
    Member

    thanks for the replies - I'm pretty sure they're not legal too. Good point about the brain Cyclops - you perform instant visual abstractions and your brain fills in the blanks - if there are bits missing that suddenly appear or disappear it can be quite unnerving!

    Posted 10 years ago #
  5. chdot
    Admin

    Not sure they are a good idea even with a steady light.

    I have one rear light that has a similar option.

    Wouldn't dream of using it.

    I have other rear lights with all sorts of fancy flashing patterns - some I can imagine to be dangerously hypnotic for following motorists!

    Don't know why manufacturers bother.

    Don't UK regulations say something about 'regular flashing'?

    Posted 10 years ago #
  6. kaputnik
    Moderator

    There's plenty of useless and probably illegal blinky lights out there, the green ones as sold by Tesco are amongst the worst offenders. Pathetic light output and in the wrong colour too!

    Posted 10 years ago #
  7. algo
    Member

    Not sure they are a good idea even with a steady light.

    probably not this slow I agree. I would say about the combination of (decent) flashing and steady that from the perspective of a driver looking in his mirrors or through a rain covered windscreen in the dark, that the presence of a flashing light at least alerts me to the fact there is a cyclist potentially coming up the inside or up ahead. Sometimes there are lots of lights and quick interpretations you have to make and I am grateful to be identify one of them as a cyclist easily when driving. That's why I have one of each.

    Posted 10 years ago #
  8. twq
    Member

    I feel a bit safer when my front light is flashing. It's a bit slow but not too bad. I've been cut up by cars twice when it was on solid, but not when it is flashing. Not a big sample size, mind...

    Posted 10 years ago #
  9. DaveC
    Member

    I have both on and flashing (two lights) when in traffic at night, but usually just a steady light on at othertimes, to light the way and be seen.

    A week ago I was cycling home along the A90 cycle path to SQ when I overtook a cyclist with what can only be described as a VERY BRIGHT STROBE!! So much so cars were flashing him as they approached him! Stupid idea in my view. I think its time the UK adopted a Germanic type of regulating what can and can't be used by bicyclists. I know there are nay sayers who don't like to be told what to use, but cars have these restrictions for their MOT (thinking about the angle of the light) so why not cyclists?

    A very slow flahsing/blinking light is as good a no light it you happen to look at it when its off.

    Posted 10 years ago #
  10. allebong
    Member

    I was watching a headcam video the other night from someone with a fairly bright front light, pointed dead ahead and flashing quite rapidly. The reflections off street signs were amazingly distracting and annoying even on video, I don't know how he could cope with it, then again people seem have different sensitivities to flashing (in case anyone has read this sentence in isolation, I'm talking about flashing lights, not a certain other interpretation of 'flashing' :P)

    I'm another who has settled on one steady and one flashing light as being the best combination of attention getting yet easy to track/keep looking at. Also good in that I can drop to one steady light on lit paths and 2 steady on unlit paths.

    I think its time the UK adopted a Germanic type of regulating what can and can't be used by bicyclists.

    It's a nice thought and it always goes through my mind when I get blinded/dazzled/strobed by other bikes but I can't see it happening without immense effort. Strictly speaking it's illegal to ride at night without BS approved lights, yet almost all bike lights aren't BS approved, as I read recently even if they have a BS compliant flashing mode the light isn't approved if it has a non-compliant steady mode, even when used on flashing (is this making sense? It did to somebody).

    Until very recently the idea of bike lights dazzling anybody was laughable and ridiculous. If we did have strict regulations on lights you'd end up fighting the tide of cheap ebay and amazon lights - which is a whole other sticky mess worthy of another thread in itself. Then you have the fact that some people legitimately need those sorts of lights for mtb and whatnot. I think you'd be better off allowing police to issue warnings to people running seriously dazzling lights, as it is a hazard to all road users. That is another whole can of worms in itself I know...

    Tangentially related, but I was reading recently about high powered laser pointers. Just a few years ago you could easily buy a 3 watt laser pointer online no questions asked. Those things are legitimately terrifying, they can, will and have instantly blinded people, burned people, caused havoc when pointed at aircraft etc. It's now illegal to sell anything like near that power level - to be more precise I recall it's always been illegal, only just like bike lights it's cheap Asian manufacturers that have opened up such immensely powerful things to the average person, so the law had to start being enforced much more seriously. I dare say I could get my hands on one if I really tried, such is the internet, but I would not want to get caught with it.

    Edit: Crikey that turned into some wall of text hasn't it.

    Posted 10 years ago #

RSS feed for this topic

Reply

You must log in to post.


Video embedded using Easy Video Embed plugin