Cycling Safety Transponder, 15m - 45m Range

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The Bike Shield app never caught on because of spotty data in scenic areas.
  Also some cyclists don't like posting their GPS.

A transponder is the same thing as a bike light except it's at radio freque
ncies, works around curves day or night, and motor vehicles tune in to the  
frequency posted on the "Share the Road; Get Cyclist Alerts At AM 1090" sig
n.

It would require a dedicated receiver but it would be nice to give the moto
rist a clue as to the distance to the cyclist around the curve, hidden behi
nd trees, so 3 different frequencies at 3 different power levels could more
 or less indicate 3 different ranges, 40 - 50 m, 25-35m and 5-20 m.

The GA needs an idea of the cost on a production run basis.


Bret Cahill







Re: Cycling Safety Transponder, 15m - 45m Range
On Sat, 23 Feb 2019 12:34:44 -0800 (PST), Bret Cahill

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Doubtful it would work; the signals especially in the vhf or uhf bands
would still be subject to terrain scattering reflection etc.. Maybe
low frequency electromagnetic induction?  Assuming that wouldn't
impose too much of a power loss on the bike's electrical system.

Then who is going to pay for it?  Car manufacturers? Get the insurance
industry behind it and you may have enough clout to get something like
that installed, regulated, required, and paid for.

Be fun to hack too...

Re: Cycling Safety Transponder, 15m - 45m Range
On Sat, 23 Feb 2019 12:34:44 -0800 (PST), Bret Cahill

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Are you proposing that every vehicle and every person have a
transponder? That would be a big market. It would have to be imposed
by law.

It's being attempted on airplanes now.


--  

John Larkin         Highland Technology, Inc

lunatic fringe electronics  


Re: Cycling Safety Transponder, 15m - 45m Range
On Sun, 24 Feb 2019 07:19:26 -0800, John Larkin

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All those "Mark of the Beast" crazies would have a fit.

I'm no one to talk; my cell phone has an aluminized mylar bag, and
I've used it twice in the last year.

Re: Cycling Safety Transponder, 15m - 45m Range
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as.  Also some cyclists don't like posting their GPS.
Quoted text here. Click to load it
quencies, works around curves day or night, and motor vehicles tune in to t
he frequency posted on the "Share the Road; Get Cyclist Alerts At AM 1090"  
sign.
Quoted text here. Click to load it
otorist a clue as to the distance to the cyclist around the curve, hidden b
ehind trees, so 3 different frequencies at 3 different power levels could m
ore or less indicate 3 different ranges, 40 - 50 m, 25-35m and 5-20 m.
Quoted text here. Click to load it


If you just wanted to go with one frequency for one range, say 30 m, then t
he motorist could, if he wanted, tune into the AM channel posted on the Cal
Trans sign just like getting traffic and other information.

Even with the 3 range system it could still be totally voluntary for both c
yclists and motorists.  The motorist could opt out of the dedicated receive
r and not tune in to AM either.

Most motorists don't want to run over cyclists while many do want to look a
t the scenery on California "historical highways" -- one mistake and you ar
e history.

A car tried to pass a cyclist on a curve or hill in NoVa by veering into th
e on coming lane.  NoVa has even worse traffic than NorCal.  The motorist h
it an on coming vehicle.

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2 - 3 billion cyclists on the planet and, with greater safety, even more ri
ders.

Safety is a critical barrier to cycling for many.  I will not cycle San Pas
qual or Campo Rd.

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Windshield wipers and bike lights were introduced before they were required
.

This is one of those things that that could be started off with what libert
arians like to call "voluntary" that is, ignore the fact that it ups the an
te for safety.  If most others have a new advantage and you don't keep up y
ou lose ground.  

Cyclists will know motorists will probably slack off and look at the ocean  
thinking they'll get an alert for every cyclist around the curve.

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Probably a more expensive longer range system.

The FCC said no licenses would be required for such a short range system, s
ame as those $6 RC helicopters they sell at Vons in the clearance rack alon
g with Thai fermented anchovy sauce.


Bret Cahill




Re: Cycling Safety Transponder, 15m - 45m Range
On Sun, 24 Feb 2019 13:03:49 -0800 (PST), Bret Cahill

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Cool. You'd be actively training drivers to kill the peds and cyclists
who don't have transponders.



--  

John Larkin         Highland Technology, Inc

lunatic fringe electronics  


Re: Cycling Safety Transponder, 15m - 45m Range
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areas.  Also some cyclists don't like posting their GPS.
Quoted text here. Click to load it
frequencies, works around curves day or night, and motor vehicles tune in t
o the frequency posted on the "Share the Road; Get Cyclist Alerts At AM 109
0" sign.
Quoted text here. Click to load it
e motorist a clue as to the distance to the cyclist around the curve, hidde
n behind trees, so 3 different frequencies at 3 different power levels coul
d more or less indicate 3 different ranges, 40 - 50 m, 25-35m and 5-20 m.
Quoted text here. Click to load it
n the motorist could, if he wanted, tune into the AM channel posted on the  
CalTrans sign just like getting traffic and other information.
Quoted text here. Click to load it
h cyclists and motorists.  The motorist could opt out of the dedicated rece
iver and not tune in to AM either.
Quoted text here. Click to load it

That was certainly the case when bike lights first appeared.  In some ways  
it's even more true today when up to a third of riders still ride w/o light
s _because_ it's now illegal.  

~~~~~~~~~~~~~~~

VC 21201, Requirements for Bicycle Equipment

California sets certain minimum requirements for bicycles that operate on p
ublic roadways. These include:

    Each bike must have a brake that will allow a cyclist to stop one wheel
 on clean, dry, level pavement.
    A bike must have handlebars that rest below the user?s shoulder
 level.
    A user?s bicycle must be an appropriate size that allows the op
erator to safely use it in an upright position, with the ability to put one
 foot on the ground.
    Any bicycle that operates on a highway or public roadway in the dark mu
st have a lamp emitting white light, a red reflector on the rear of the bic
ycle, and white or yellow reflectors on the pedals. A rider may attach a wh
ite light illuminating lamp to himself or herself in lieu of the first requ
irement.

~~~~~~~~~~~~~~~~~

The law needs to be updated for lights as well as transponders because a re
ar red light is more valuable than the front white light.  Any rider who is
n't using any lights is either suicidal and/or doesn't want to be visible.  
 I often keep extra $1 button cell lights and give them to any nearby guber
s who don't have one.  They can turn it on after a cop pulls them over.

The City of Tucson - Pima Cnty is very cycling friendly, providing free tra
ining, free lunch and I believe free bike lights.


Bret Cahill


Re: Cycling Safety Transponder, 15m - 45m Range
On Sunday, February 24, 2019 at 7:10:33 PM UTC-5, John Larkin wrote:
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areas.  Also some cyclists don't like posting their GPS.
Quoted text here. Click to load it
frequencies, works around curves day or night, and motor vehicles tune in t
o the frequency posted on the "Share the Road; Get Cyclist Alerts At AM 109
0" sign.
Quoted text here. Click to load it
e motorist a clue as to the distance to the cyclist around the curve, hidde
n behind trees, so 3 different frequencies at 3 different power levels coul
d more or less indicate 3 different ranges, 40 - 50 m, 25-35m and 5-20 m.
Quoted text here. Click to load it
n the motorist could, if he wanted, tune into the AM channel posted on the  
CalTrans sign just like getting traffic and other information.
Quoted text here. Click to load it
h cyclists and motorists.  The motorist could opt out of the dedicated rece
iver and not tune in to AM either.
Quoted text here. Click to load it

First no driver will tune in... but if I do, I get a beep beep beep on my
  
radio?  That tells me a biker is nearby but nothing else.  A light or  
flashing light will be much better for the biker... and asks nothing  
of the driver.  


Now if we could equip all the deer around here with transponders.....

George H.  
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Re: Cycling Safety Transponder, 15m - 45m Range
On Mon, 25 Feb 2019 11:45:22 -0800 (PST), George Herold

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You are right.  We'd all have to be sharing GPS data or equipped with
a system similar to aircraft collision avoidance radar systems, with a
display or voice that tells you where the threat is.

To just know there was a bicycle in proximity to an automobile would
be useless.  
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Re: Cycling Safety Transponder, 15m - 45m Range
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Try cycling or driving on CA-1 north of Westport where it side steps the King Range.



Re: Cycling Safety Transponder, 15m - 45m Range
On Tue, 26 Feb 2019 10:26:37 -0800 (PST), Bret Cahill

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Frankly, cars scare me when I'm bicycling.  I've found plenty of
places to explore where there are very few autos.  

Re: Cycling Safety Transponder, 15m - 45m Range
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There's an exponential decline in the odds of collision as you move away from traffic outside of the white line.  One meter of smooth pavement outside the rumble strip would save a lot of lives.  

The problem is many road beds don't have that 1 meter.

Since CalTrans is willing to try _anything_ to keep NorCal roads open they ought to start passive tunnel building:

Anchor pre fabricated Quonset like tunnel segments to the hill side on sections prone to mud slides.  Shove enough dirt down on top of the structure to distribute and soften the impact of any large rocks rolling down next mudslide.  

The tunnel segments could then be wide enough to accommodate a bike lane.  Trying to bulldoze the entire side of the mountain for an extra m of road bed may require a gazillion tons of fill, i.e., Hwy 299 2 years ago.

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Less traffic doesn't necessarily extrapolate linearly to less accidents because everyone is off guard.  

In the city everyone is always aware there are other cyclists, pedestrians as well as motorists nearby.


Bret Cahill


Re: Cycling Safety Transponder, 15m - 45m Range
Quoted text here. Click to load it
as.  Also some cyclists don't like posting their GPS.
Quoted text here. Click to load it
quencies, works around curves day or night, and motor vehicles tune in to t
he frequency posted on the "Share the Road; Get Cyclist Alerts At AM 1090"  
sign.
Quoted text here. Click to load it
otorist a clue as to the distance to the cyclist around the curve, hidden b
ehind trees, so 3 different frequencies at 3 different power levels could m
ore or less indicate 3 different ranges, 40 - 50 m, 25-35m and 5-20 m.
Quoted text here. Click to load it

You need to halp out wif some emails to yer assembly person.

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Re: Cycling Safety Transponder, 15m - 45m Range
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Just get yourself a big ass 4x4.

You feel the road lice.

TC

--  

terminal_crazy@sand-hill.uk

Re: Cycling Safety Transponder, 15m - 45m Range
On Sun, 24 Feb 2019 16:24:31 +0000 (GMT), Terminal_Crazy

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How about air-bag bumpers?  

Radar chips are getting absurdly cheap.  


--  

John Larkin         Highland Technology, Inc
picosecond timing   precision measurement  

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