I run a Valentine-1 radar detector on my bike
In the last few weeks, it's on about half the time I'm on 280 from
Cupertino and north. Both ways.
There are these solar powered cylindrical things on some of the
signposts every mile or so. I think they are the sources.

Does anyone know what they are?

mb

MB wrote:
> I run a Valentine-1 radar detector on my bike
> In the last few weeks, it's on about half the time I'm on 280 from
> Cupertino and north. Both ways.
> There are these solar powered cylindrical things on some of the
> signposts every mile or so. I think they are the sources.
>
> Does anyone know what they are?

microwave relays?

Timberwoof wrote:
> In article <Xns968CE8AD6381Arazelwizzard@216.168.3.30>,
> Ray Hazel <(E-Mail Removed)> wrote:
>
>
>>Earlier, Timberwoof wrote in ba.motorcycles:
>>
>>
>>>In article <uu2dnfliuYVrXVXfRVn-(E-Mail Removed)>,
>>> Michael Sierchio <(E-Mail Removed)> wrote:
>>>
>>>
>>>>MB wrote:
>>>>
>>>>>I run a Valentine-1 radar detector on my bike
>>>>>In the last few weeks, it's on about half the time I'm on 280 from
>>>>>Cupertino and north. Both ways.
>>>>>There are these solar powered cylindrical things on some of the
>>>>>signposts every mile or so. I think they are the sources.
>>>>>
>>>>>Does anyone know what they are?
>>>>
>>>>microwave relays?
>>>
>>>There are some uhf or even shoter-wavelength antennas on some center
>>>light posts, four to a goup, each pointed in a slightly different
>>>direction, apparently one for each lane. As cell-phone relays they
>>>aren't much good because individual towers farther apart would work
>>>better for that. I think they're radar speed-sensors.
>>>
>>>The callboxes do have solar panels to charge the batteries, but they're
>>>off at the side of the highway.
>>>
>>
>>FasTrak sensors? Kind of like the ones on the San Mateo Bridge?
>
>
> I don't know what those look like, and I don't know why they'd have them on 101
> in the middle of no place.
>

IIRC these are traffic flow transponders, they feed info to Caltrans as
to amount and general speed of traffic at various points.

--
PC Paul

Trip pics at: http://photos.yahoo.com/paul1cart

"To educate a man in mind and not in morals is to educate a menace to
society" - Theodore Roosevelt

PC Paul wrote:
> Timberwoof wrote:
>
>> In article <Xns968CE8AD6381Arazelwizzard@216.168.3.30>,
>> Ray Hazel <(E-Mail Removed)> wrote:
>>
>>
>>> Earlier, Timberwoof wrote in ba.motorcycles:
>>>
>>>
>>>> In article <uu2dnfliuYVrXVXfRVn-(E-Mail Removed)>,
>>>> Michael Sierchio <(E-Mail Removed)> wrote:
>>>>
>>>>
>>>>> MB wrote:
>>>>>
>>>>>> I run a Valentine-1 radar detector on my bike
>>>>>> In the last few weeks, it's on about half the time I'm on 280 from
>>>>>> Cupertino and north. Both ways.
>>>>>> There are these solar powered cylindrical things on some of the
>>>>>> signposts every mile or so. I think they are the sources.
>>>>>>
>>>>>> Does anyone know what they are?
>>>>>
>>>>>
>>>>> microwave relays?
>>>>
>>>>
>>>> There are some uhf or even shoter-wavelength antennas on some center
>>>> light posts, four to a goup, each pointed in a slightly different
>>>> direction, apparently one for each lane. As cell-phone relays they
>>>> aren't much good because individual towers farther apart would work
>>>> better for that. I think they're radar speed-sensors.
>>>> The callboxes do have solar panels to charge the batteries, but they're
>>>> off at the side of the highway.
>>>>
>>>
>>> FasTrak sensors? Kind of like the ones on the San Mateo Bridge?
>>
>>
>>
>> I don't know what those look like, and I don't know why they'd have
>> them on 101 in the middle of no place.
>>
>
> IIRC these are traffic flow transponders, they feed info to Caltrans as
> to amount and general speed of traffic at various points.
>
Would this correspond to their locations?
http://www.sigalert.com/map.asp?Region=Bay+Area


Rich, Urban Biker

Rich, Urban Biker wrote:

> PC Paul wrote:
>
>> Timberwoof wrote:
>>
>>> In article <Xns968CE8AD6381Arazelwizzard@216.168.3.30>,
>>> Ray Hazel <(E-Mail Removed)> wrote:
>>>
>>>
>>>> Earlier, Timberwoof wrote in ba.motorcycles:
>>>>
>>>>
>>>>> In article <uu2dnfliuYVrXVXfRVn-(E-Mail Removed)>,
>>>>> Michael Sierchio <(E-Mail Removed)> wrote:
>>>>>
>>>>>
>>>>>> MB wrote:
>>>>>>
>>>>>>> I run a Valentine-1 radar detector on my bike
>>>>>>> In the last few weeks, it's on about half the time I'm on 280 from
>>>>>>> Cupertino and north. Both ways.
>>>>>>> There are these solar powered cylindrical things on some of the
>>>>>>> signposts every mile or so. I think they are the sources.
>>>>>>>
>>>>>>> Does anyone know what they are?
>>>>>>
>>>>>>
>>>>>>
>>>>>> microwave relays?
>>>>>
>>>>>
>>>>>
>>>>> There are some uhf or even shoter-wavelength antennas on some center
>>>>> light posts, four to a goup, each pointed in a slightly different
>>>>> direction, apparently one for each lane. As cell-phone relays they
>>>>> aren't much good because individual towers farther apart would work
>>>>> better for that. I think they're radar speed-sensors.
>>>>> The callboxes do have solar panels to charge the batteries, but
>>>>> they're
>>>>> off at the side of the highway.
>>>>>
>>>>
>>>> FasTrak sensors? Kind of like the ones on the San Mateo Bridge?
>>>
>>>
>>>
>>>
>>> I don't know what those look like, and I don't know why they'd have
>>> them on 101 in the middle of no place.
>>>
>>
>> IIRC these are traffic flow transponders, they feed info to Caltrans
>> as to amount and general speed of traffic at various points.
>>
> Would this correspond to their locations?
> http://www.sigalert.com/map.asp?Region=Bay+Area
>
>
> Rich, Urban Biker

I tinks U got it dere Bunky!

--
PC Paul

Trip pics at: http://photos.yahoo.com/paul1cart

"To educate a man in mind and not in morals is to educate a menace to
society" - Theodore Roosevelt