"LED bulbs have an extremely high failure rate ." Not so. What you are missing is that PROPERLY SELECTED AND ENGINEERED APPLICATIONS, or the failure to make same, are the key. An LED should and can last something like 100,000 hours in service
. But for bus marker lights, there are laws requiring specific brightness of the lights. You get brightness by running the LED at or above maximum design parameters, and you can make a cheap
49c LED as bright as an expensive $7 LED, if you are willing to replace it after a year or two when it burns out. OK, not quite as bright, but the array is still plenty bright. Those vehicle marker lights are intended to have multiple burnouts. the logic is that if you have a commercial
vehicle and you burn out a safety
lamp, you now have to pull it off the road and have a union mechanic
replace it--making the cost of replacing a light bulb nearly $200, more if you figure the cost of pulling the vehicle out of service
for an entire day. So...You have a marker light with 24 LEDs in it, and you don't pull the vehicle until half of them have burned out and there's routine depot maintenance
going on anyway. And you buy the marker light for $20 instead of $100. Net saving? Right, $80 per marker by using LEDs that are intended to be consumed and replaced.
Your flashlight...I suspect was just the random failure, or the usual "let's make it as cheap as we can". The LEDs in my first "big digits" digital clock ran over ten years, day and night, 24x7, before it was too dim and I replaced it. With zero out of maybe 4 dozen LEDs failed.
Don't blame the tools for the poor workman.<G>
Halogen is nice...but my single-LED pocket light will burn 40 hours on a single
AA cell. That's not as bright as a halogen light--but I know I can rely on it to make SOME light all year long. And not need a new bulb for my lifetime.