Toning Down Train Horns

  • The sound of train horns is loud and makes your cover your ears. Now, there is a different kind of horn, the wayside train horn, that could make all that sound a little less noisy. (Photo courtesy of the Department of Transportation)

The sound of a train blowing its horn is an unavoidable part of life in many communities. One town is taking steps to make trains a little less intrusive on the lives of people who live near the tracks. The GLRC’s Chris Lehman reports:

Transcript

The sound of a train blowing its horn is an unavoidable part of life in
many communities. One town is taking steps to make trains a little less
intrusive on the lives of people who live near the tracks. The GLRC’s
Chris Lehman reports:


About 80 freight trains roll through this crossing every day. They’re not
subtle.


(Sound of train horn)


That’s what a Union Pacific locomotive sounds like as it rolls through
this city in northern Illinois.


Now, here’s a different kind of train whistle:


(Sound of a wayside train horn)


That’s something called a wayside horn. The City of DeKalb is seeking
permission to install these horns at four of the seven street crossings
along the main Union Pacific east-west tracks through the city. The
other streets would have upgraded crossing gates. The goal would be to
eliminate the need for most engines to blow their horns as they pass
through town.


The wayside horns themselves aren’t much quieter than a regular train
horn. After all, they’re not supposed to be quiet. Cars and pedestrians
would still be warned about oncoming trains. The difference is that a
train sounds its horn as it approaches the crossing.


The wayside horn stays at the crossing. The theory is that a wayside
horn directs its sound down the street…it’s not the indiscriminate
blasting that interrupts people who live in houses that happen to be near
the tracks but nowhere near a crossing.


(Sound of walkie-talkie)


DeKalb City Engineer Joel Maurer recently set up a wayside horn and
walked through a residential neighborhood to test the theory. This is
what a wayside horn sounds like a block away from the tracks, but on the
same street as a crossing:


(Sound of wayside horn)


Now, this is what a wayside horn sounds like a block away from the
tracks, but on a street where there isn’t a crossing. You’ll have to listen
closely:


(Sound of walkie-talkie, then faint sound of horn)


If you’re having trouble hearing it…well, that’s kind of the point.


Now, here’s what a train horn sounds like at that same street corner:


(Sound of train horn)


The City’s tests found that in areas a block or more away from the tracks,
the wayside horns measured some ten decibels lower than train horns,
but the wayside horns won’t make a difference in just residential
communities.


Jennifer Groce is director of Main Street DeKalb, a downtown advocacy
organization. Her office is about a block from the tracks. She says she’s
looking forward to the switch to wayside horns…


“Any help to help deafen the sound a little bit is definitely an
improvement to what we have now. With 80 trains a day, it’s a huge
influence on our businesses. We talk with all different kinds of people
throughout the day, and you can hear us on our phones, you can hear that
train, all the time. It’s a great factor for us to be able to deafen it a
little bit. Especially for the residents that are down here and have to
hear it. A lot of times we can’t open our windows, you can’t
have your car window rolled down…so to be able to stand here freely
without having to plug your ears, is a very nice thing.”


It could be a while before Groce can unplug her ears, though. The City
has to get the wayside horn plan cleared by a web of state and Federal
agencies, but DeKalb does have precedence on its side. Wayside horns
have been installed in about 60 communities nationwide, with the highest
concentration in the Midwest. Some towns have banned train whistles
altogether. But new, stricter Federal regulations now make that all but
impossible in many locations. That might make the wayside horns ever
more popular.


For the GLRC, I’m Chris Lehman.

Related Links

Bubble Barrier Tweaked for Asian Carp

  • Scientists are always looking for a new deterrent for the Asian Carp. (Photo courtesy of the U.S. Fish and Wildlife Service)

Scientists across the region are expanding their arsenal of technology to fight invasive species. One research team hopes to use sound and bubbles to keep an invasive fish out of the Great Lakes. The Great Lakes Radio Consortium’s Shawn Allee has more:

Transcript

Scientists across the region are expanding their arsenal of technology to fight invasive species. One research team hopes to use sound and bubbles to keep an invasive fish out of the Great Lakes. The Great Lakes Radio Consortium’s Shawn Allee has more:


For years, biologists worried Asian Carp could enter Lake Michigan through a canal near Chicago. The Army Corps of Engineers is building an electric barrier at the canal to block the carp’s progress.


But researchers at Illinois-Indiana Sea Grant are devising a back-up plan. Researcher Mark Pegg says new devices could shoo fish away with bubbles and sound.


“The bubbles themselves are causing a lot of turbulence in the water that the fish don’t like. On top of that, they’re emitting a really loud noise, at least to the fish anyway, so that’s sort of a one-two punch.”


Pegg says the combination of bubbles and sound works in another way too. Bubbles actually amplify underwater noise, so sound travels further. The Sea Grant team will continue testing the devices. In the meantime though, even if it works, the project might hit a roadblock: the existing barrier program has no extra money for the system.


For the GLRC, I’m Shawn Allee.

Related Links

Gum-O-Flage Cloaks Hunters This Season

  • Deer hunters try their best to prevent deer from sensing their presence - from hiding atop platforms to wearing camouflage clothing. (Photo by Alan Mead)

In much of the region, deer hunting season is in full swing. Hunters are taking to the woods doing their darndest to keep deer from spotting them. Now, an avid deer hunter has taken camouflage to another level. The Great Lakes Radio Consortium’s Christina Shockley explains:

Transcript

In much of the region, deer hunting season is in full swing. Hunters are taking to the
woods doing their darndest to keep deer from spotting them. Now, an avid deer hunter has
taken camouflage to another level. The Great Lakes Radio Consortium’s Christina Shockley
explains:


Neil Brentl says hunters know when a deer smells you.


“They make a very, very distinct like, huff sound, and you know. Every hunter knows
the sound. When you hear it, you almost wanna get out of your tree because you’re done.”


Brentl says that powerful sense of smell is a deer’s first line of defense. A few years
ago, Brentl’s brother suggested that perhaps the deer were sensing Brentl’s breath. The
idea for “gum-o-flage” was born.


“I took, like a regular gum, actually, like Bubble Yum, and chewed all the flavor out of
it, and added pine needles to it believe it or not. And I found that it was working.”


Brentl says the gum isn’t scientifically proven to work. But he says he hopes to have some
tests done soon. He says so far, “gum-o-flage” has been a hit with hunters in Upper Wisconsin.


For the Great Lakes Radio Consortium, I’m Christina Shockley.

Related Links

Talking to the Chameleon

Chameleons are known for the signals they send with their
bodies. In just 30 seconds, they can change dramatically. But
chameleons don’t hear well. And scientists thought they didn’t
communicate with sound. As the Great Lakes Radio Consortium’s Karen
Kelly reports, an amateur pet owner has proved them wrong:

Reducing Road Noise

Efforts to reduce road noise pollution are making progress in
Indiana. Last year, Purdue University opened the Institute for Safe,
Quiet, and Durable Highways. The Great Lakes Radio Consortium’s
David Naylor reports:

Transcript

Efforts to reduce noise pollution are making progress in Indiana.
Last year, Purdue University opened the Institute for Safe, Quiet, and
Durable Highways. The Great Lakes Radio Consortium’s David
Naylor reports:


In the past, measuring road noise meant measuring the sound of a
car’s mechanical systems, primarily engine and muffler noise. Now,
with the development of more efficient engines, researchers have
identified the tires and road surface as the newest problem.


So, Purdue researchers are looking for the quietest combination of
tire treads and pavement. They say the most promising surface so far is
one developed in Europe: a thick layer of asphalt, with pits one and a
half to two inches deep.
It reduces road noise by about 50% and does well in the
freeze-and-thaw cycle. But the major problem is keeping oil and dirt
out of the deep pits.
Lab director Bob Bernhard hopes a double layer of pavement will
help.


“One which has the properties that they think are optimal for acoustics, and then put a second

layer below it, which has bigger spacing. In that way, they can flush the dirt and the things that

are plugging, out of the top layer, where the acoustics are affected, in the bottom layer, and

then flush it out.”


Research on the porous pavement continues in Europe and the U.S.
There are no plans yet for commercial production.


For the Great Lakes Radio Consortium, I’m David Naylor.

Quieting Those Annoying Jet-Skis

Manufacturers of personal watercraft are making efforts to cut down on
complaints this summer. Plans include better training for people who
buy the waterbikes and cutting down on noise. The Great Lakes Radio
Consortium’s Mike Simonson has more:

Noise Pollution Dampens the Sounds of Nature

A man who listens to the sounds of nature for a living…says we’re
missing a lot. He thinks because of noise pollution and because we’re
disconnected from wildlife…people often go through life without hearing
much of the rest of the living world. The Great Lakes Radio
Consortium’s Lester Graham reports:

Talking to the Chameleon

Chameleons are known for the signals they send with their bodies. In
just 30 seconds, they can change dramatically. But chameleons don’t hear
well. And scientists thought they didn’t communicate with sound. As the
Great Lakes Radio Consortium’s Karen Kelly reports, an amateur pet owner
has proved them wrong:

Musician Harmonizes With Nature

Music has often imitated nature. Flutes trill to sound like birds.
Cymbals crash and drums thunder like storms. One musician has taken it
a step further and harmonizes with nature. The Great Lakes Radio
Consortium’s Lester Graham reports on an artist whose life-long pursuit
has been a musical communion with the earth and its creatures: