| General > General Technical Chat |
| Biden admin moving forward with light bulb bans in coming weeks |
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| SiliconWizard:
Don't worry, AI will save us. |
| vk6zgo:
--- Quote from: coppice on April 15, 2023, 12:10:25 pm --- --- Quote from: vk6zgo on April 15, 2023, 09:42:26 am --- --- Quote from: SiliconWizard on April 15, 2023, 03:06:03 am ---Whether it's actually useful in full daylight (unless very cloudy) is questionable, but there are some countries where not only it is legal, it is mandatory. --- End quote --- It can be simply tested whilst on a country road during a sunny day. I found no difference in visibility between vehicles with their lights on or off. Whether it is any more effective in heavy traffic I don't know, but I doubt it. The original idea came from Scandinavian countries where it is dark for most winter days. --- End quote --- You don't have bad weather? Running lights are pretty much irrelevant on a bright sunny day out in the open. Even on one of those days you only need to go under a big underpass, and the lights start to be effective. In bad weather they are a real boon. --- End quote --- If we have bad weather, it is "slam you up against the wall & beat you up" type of weather. Most of the rest of the time, it is reasonably sunny between showers, or even normal storms. Those very dark, overcast days, where it looks like late afternoon all day are not near as common as in UK winters. When visibility is bad, people will turn on their proper headlights. "Underpass"? ---We turn our lights on if we go through a tunnel, but an underpass would have to be seriously big to need to do so. |
| strawberry:
if avg LED lasts 5years , or ~5000h , or avg ~3.3h/d (from experience) where 50 000h should last for 50y :-DD why their numbers became more modest |
| Nusa:
--- Quote from: strawberry on April 16, 2023, 10:55:57 am ---if avg LED lasts 5years , or ~5000h , or avg ~3.3h/d (from experience) where 50 000h should last for 50y :-DD why their numbers became more modest --- End quote --- Cite your source of numbers if you want to be believable, rather than an undefined "they". I believe your numbers are not correct, at least for quality products which can last the life of the vehicle. But in general, the 50K number is about JUST the LED, not the associated electronics that require sufficient heatsinking. Heat is what shortens the life of the electronics. Cheap aftermarket products often skimp on both the quality of components and the heatsinks. |
| coppice:
--- Quote from: vk6zgo on April 16, 2023, 12:33:37 am ---"Underpass"? ---We turn our lights on if we go through a tunnel, but an underpass would have to be seriously big to need to do so. --- End quote --- Underpasses can be hundreds of metres long, especially when 2 roads cross in a gentle X pattern, and someone is underneath for quite a distance. They seem to like doing that in parts of America, and your sat nav gets confused because you appear to be on the right road, when you are really on the one above or below. |
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