[PRCo] Re: of weird headways, the high tech era, and the haves and have-nots

[Jim Holland]

Good Morning!!

>> On Wed, 28 Nov 2001, Jim Holland wrote:

>>       The NextBus system is Not just for dialins  --  key stops along a route
>> will display this information as well.

> Derrick J Brashear wrote:

> A map, or just "next arrival time"?

	Just the estimated-arrival time is keyed to the NextBus system.   A
separate static system map is displayed in each bus stop.   This is
presently in use on the 22-Fillmore trolley coach and many of the light
rail lines.   My understanding is that the F-Market hysterical system
will not get the NextBus.

>>       And our buses announce stops from a satellite as well  --  amazing how
>> nicely it works.   Gets a little ahead of itself downtown but we assume
>> it is the tall buildings and signals bouncing off them.

> GPS, presumably.

	Yes -- sorry, should have specified that.

> The errors are actually more likely when the system can't "see" enough
> satellites in the sky there's a higher error. It uses multiple satellites
> and triangulates a position.

	Thanks for the explanation - never checked into how it works.  
Tall--Buildings might block direct access to the satellites then!

>>       Public hones in on this and other characteristics as well.   Remember
>> standing downtown and grandma and granddaughter stepped onto the island,
>> nicely dressed, I might add - hats, gloves, etc!   Grandma said a good
>> way to recognize the trolleycar you need is the one with the light on
>> the roof!!

> These days people all dress like slobs, but that's another rant for
> another list.:-)

	Nice to hear that, Derrick!   That fad of jeans with farmer's
suspenders and backpack suggested Maoist Communists to me!   That seems
to be pretty much a part of the past (I hope!)

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James B. Holland

Holland  Electric  Railway  Operation.......
......"O"--Scale  St.-Petersburg Trams Company Trolleycars  AND......
............"O"--Scale  Parts  mailto:pghpcc at pacbell.net

............Pennsylvania Trolley Museum (PTM) http://www.pa-trolley.org/
......Pittsburgh  Railways  Company  (PRCo),   1930  --  1950
N.M.R.A.  Life member #2190; http://www.nmra.org

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