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Subsonic Train Horn
Stop people with headphones from walking into trains and becoming track fill. | |
I was standing outside today, and noticed that as a
train
went by, the sound was loud in all directions yet we
still
have had numerous cases where pedestrians wearing
earbuds have been killed by trains because they did
not
hear the horn.
I have noticed, however, that cars driving down
the
street with their sub-woofers blasting can still be felt
over the noise of the horn blowing.
This idea would affix a speaker to the front of the
train
that would blast a low frequency tone ahead of the
train. The speaker ideally would have an enclosure
that
"directed" the sound forward and directly at anyone
ahead of the train and would limit the spread of the
sound to surrounding neighborhoods. I would suggest a
"stuttered" and ramped tone to startle the person on
the
tracks by getting their attention.
The distance needed to send the sound should be
relatively short (this being a last ditch effort to signal
a
pedestrian or car) so it should not be necessary to
blow
with the regular train horn and the subsonic vibrations
would alert the person in time to jump to safety when
sounded.
[link]
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Good idea. Even better, that microwave nonlethal crowd
dispersal technology which causes pain without, supposedly,
actual injury. An additional advantage would be that it's
directional: no need to bother people not in the path of the
vehicle. |
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Maybe if there was some way of visually warning people to stop and look... like a couple of huge freakin' metal rails or something. [+] though. |
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//Maybe if there was some way of visually warning
people// |
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You would think that the flashing lights and the gates
with *more* flashing lights would suffice. I watch people
texting with earbuds who walk directly in front of cars.
Maybe it's nature's way of thinning the herd...? |
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Blatantly counter-evolutionary measure (-) |
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//Blatantly counter-evolutionary measure// |
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Nothing anti-evolutionary, just might take a while for the distracted pedestrian who can survive being hit by a truck evolves? |
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//Blatantly counter-evolutionary measure // |
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Agreed, Twizz. I am not overly-concerned with facilitating the propagation of such DNA. |
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What [Twizz] and [MikeD] said. |
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Eugenics starts at home. No one should have kids before
reaching the age of 90 or so, to make sure you don't carry any
familial increased risk of colon cancer or Parkinson's. Y'all
gonna get tested for ApoE-E4, and if it's positive, you're
gonna adopt, right? |
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[MaxwellBuchanan] Are you agreeing with the inverse of
[8th_of_7]? |
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The whole of seven is seven itself.
Half of seven is three and a half.
Third of seven is two and one third.
...
Eighth of seven would then be what that Max guy said. |
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No, he's just treating [8th] as being cardinal and a fraction vulgar, rather than ordinal and a tad paradoxical. |
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I think it's the day-glo beretta that does it. |
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//Subsonic// means slower than the speed of sound, and is redundant in the title, as you can't use airborne sound to warn someone in front of a transonic or supersonic train. |
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The noun for sound at a frequency below human hearing is infrasound; the adjective is infrasonic. There is no easy way to direct infrasound from the front of a train. The emitter and the width of the beam would have to be much greater than the wavelength of the sound, and infrasound implies wavelengths longer than 10m or so. |
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//what that Max guy said// No, that would be
[1.1428571428571428] I think he's agreeing with the inverse
of what [8th_of_7] said. Which would make [MB] correct,
in
my view. |
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There is no longer any possibility of [MB] enlightening us
directly, or through a prophet. We're left in the position
of
Talmudic commentators, arguing about what He meant. |
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(//There is no easy way to direct infrasound// see first
anno.) |
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// [MB] enlightening us directly, or through a prophet. // |
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We concur, since extensive research has shown that MaxCo is
nothing more than a Post Office box registered as a non-prophet
making organisation, located on board a Liberty ship moored off
Guernsey, flying the ensign of the Lichtenstein Navy but
registered as a charitable orphanage in Liberia, yet claiming to
be one of the" outlying" Cayman Islamds. |
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When we asked to speak to "The person in charge", the group of
heavily armed men aboard informed us that they knew nothing
of such
a person, but had merely been paid in cash" by some bloke they
mey
down the pub" to do some painting and tidying up. |
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Since part of this" tidying up" involved noisily loading the ready-
use clips into a dual 40mm AA cannon and training it in our
general direction, we decided not to enquire
further or intrude on their time. |
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We are now regretting our purchase of upgraded deflector
shields, although the finance terms were very attractive, the
glossy brochures very credible, and the young lady salesperson
from MaxCo was very … convincing … |
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I was, indeed, agreeing with [8th of 7], and an eighth of seven is
indeed [0.875]. |
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Regarding the deflector shields, it appears that you may have
neglected to turn them on. The "on" switch can be found
underneath the large illuminated sign which says "ON". It's a sort
of code we use. |
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//an eighth of seven is indeed [0.875]// [MB] haven't you
heard about the death of the author? |
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