[PRCo] Fwd: Pittsburgh 1948 - Part 1

[Bill]

--- In LRPPro at yahoogroups.com, "Leroy W. Demery, Jr."
<chris_demery at ...> wrote:

Lyndon et al.,

I've decided to include "all" of the Pittsburgh data from the 1949
"Lougee Report" into the 
"traffic density project."

A very good - and sobering - perspective on how the city has changed
(and why many 
once-busy streetcar lines would not carry much traffic today) may be
obtained using the 
"hybrid" (superimposed street map and satellite photo feature) of
"Google Maps." 

1 - Spring Garden
2.6 miles
1,083,000 revenue passengers

2 - Etna
6.2 miles
2,336,000 revenue passengers

3 - Millvale
5.0 miles
2,421,000 revenue passengers

4 - Troy Hill
2.7 miles
1,384,000 revenue passengers

5 - Spring Hill
2.2 miles
950,000 revenue passengers


Lines 1-5

10.8 miles system length (determined by treating lines 1, 3, 4 and 5
as "branches" of line 
2).

8,174,000 revenue passengers.

10.9 million "total passengers" (above figure multiplied by 1.33.)

Composite ATD: 2 miles. This I determined by assigning average travel
distance per 
revenue passenger to the lines - quite arbitrarily - as follows:

1 - Spring Garden: 1.5 miles.
2 - Etna: 4 miles.
3 - Millvale: 3 miles.
4 - Troy Hill: 1.5 miles.
5 - Spring Hill: 1.5 miles.

I then calculated a "weighted average" travel distance per revenue
passenger, 2.7 miles. 
This, adjusted "downward" to account for revenue and transfer
passengers, gives 2.0 miles 
ATD. (This figure is presented on the "traffic density tables" as
simply 2 mi.)

(Whatever might have occupied the Allegheny riverfront area, between
11th St and 21st St, 
has been leveled and replaced by a very large parking lot. This area
is marked "Penn Park" 
on an old street map I have. "Depopulation" is also visible along
parts of the North Side 
segments, Spring Garden Avenue in particular.) 

Leroy W. Demery, Jr.

--- End forwarded message ---