Source Documentation

The operation of the PRR Middle Division is intended to adhere to prototype practice where possible and reasonable. The following are links to prototype documents for reference.

The Rules for Conducting Transportation (a.k.a. Book of Rules) is the general “rule book” for the entire railroad.

The Eastern Region, Middle Division, Employee Timetable #7 includes rules specific to the locations depicted as well as timetable schedules for passenger and freight traffic.

The Makeup of Trains includes the specific consists of all of the passenger trains passing through the locations depicted.

The Through Freight Train Schedules Between Principal Points includes the blocking information and makeup of all freight trains passing through the locations depicted.

The Appendix to General Notice No. 234-B: Local Arranged Freight Train Service, Eastern Region provides information on intradivisional local freight service.

Scenarios

Operating sessions run on a 2:1 fast clock and alternate between two scenarios:

  • The First Trick scenario depicts a 7:00 a.m. to 3:00 p.m. shift. All scheduled trains are run plus local service on the secondary lines. Mineral trains and other extras are operated as capacity and crews allow.
  • The Second Trick scenario depicts a 3:00 p.m. to 7:00 p.m. shift, with a break, and resumes at 3:00 a.m. to 7:00 a.m. All scheduled trains are run. In addition, non-prototypical local service is operated on the secondary lines. Mineral trains and other extras are operated as capacity and crews allow.

The schedule is derived from the prototype Employee Timetable and provides target o/s times at LEWIS. The ETT provides times at LEWIS for passenger trains. The ETT provides start and end times between Altoona and Harrisburg/Enola for freight trains; time at LEWIS is interpolated.

As it is impractical to separately model each and every train on the schedule, the approach is to group trains by typical consist and create a model consist for each group. These "composite" trains then run multiple times, but as different symbols (freight) or named (passenger) trains. You may view the representative and prototype consists by clicking on the train symbol on the Sequence of Trains document.