Author Topic: "Island" on former PRR Main (NE Corridor)  (Read 1113 times)

0 Members and 1 Guest are viewing this topic.

Mark5

  • Crew
  • *
  • Posts: 9438
  • Always with the negative waves Moriarty ...
  • Respect: +232
"Island" on former PRR Main (NE Corridor)
« on: June 14, 2007, 04:13:06 PM »
0
I've been riding commuter trains on this for years and the purpose of this "island" between the main lines (near Bowie State) still baffles me:

http://maps.google.com/maps?f=q&hl=en&q=Bowie,+Prince+George's,+Maryland,+United+States&sll=37.0625,-95.677068&sspn=0.010941,0.020084&layer=t&ie=UTF8&cd=1&ll=39.047452,-76.740446&spn=0.010649,0.020084&t=k&z=16&iwloc=addr&om=1

Any theories?

asciibaron

  • Crew
  • *
  • Posts: 3101
  • Respect: 0
    • Steve's Happy Fun Time IntarWebs
Re: "Island" on former PRR Main (NE Corridor)
« Reply #1 on: June 14, 2007, 04:34:57 PM »
0
curvature reduction in the 1970's to increase train speeds.  notice that MARC uses the #1 track around the outside. Amtrak does not use the #1 track between New Carrollton and BWI until the crossovers at Grove (under MD 32).

-Steve
Quote from: Chris333
How long will it be before they show us how to add DCC to a tree?

Mark5

  • Crew
  • *
  • Posts: 9438
  • Always with the negative waves Moriarty ...
  • Respect: +232
Re: "Island" on former PRR Main (NE Corridor)
« Reply #2 on: June 14, 2007, 04:52:20 PM »
0
thanks Steve! one less mystery.