The La Plata Division

of  the

Denver & Rio Grande Western

a   m o d e l   r a i l r o a d   t o u r

Operations

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This newest incarnation of the railroad gives me the opportunity to engage in more realistic operations.  With the point-to-loop design, classification yard, and sidings, I can now create realistic operating sessions.

As mentioned elsewhere, I do not use a command-control system (DCC)-- the layout is simple block wiring with 2 power packs for the main and a third for yard operations.  This is adequate for operations on a layout of this size.

The plan calls for one or two operators operating trains on the road.   An additional operator can perform yard jobs, assembling trains and servicing power.  I have been testing operations (albeit with a single mainline cab) and it's proving to be a ton of fun!  It really keeps me busy, trying to do the work of three by myself, so I need to get some friends trained on operations.
 

RODVT meeting coal train at Winter Park.Space constraints dictated that Clay siding isn't really long enough to be very useful, so dispatching has to be careful about planning meets.  These are primarily at Winter Park or Rocky.   (pictured: an eastbound RODVT train waits in the hole at Winter Park for a westbound coal empty to pass.)
 

Railblazer at tunnel 27I have been routinely operating manifest freights with two or three units and up to 18 cars, with no problems.  I also have been operating a 22-car coal train, also with no problems (except for planning meets between trains).  I even performed a test of a monster 34-car coal train with powered swing helpers, but that started to test certain laws of physics... (pictured: the westbound Railblazer exits tunnel 27 on its way through the tunnel district.)
 

14 is the magic number on this layout!  I can fit a 14-car freight (plus 3 locomotives) into Winter Park siding.  14 cars will fit between the south ladder switch and the crossover switch at the north end of the yard.  14 cars fit into the longest yard tracks.  I can cut a pair of swing helpers into a coal train, 14 cars back, and still fit all  the power into the reversing loop.

Operating Sessions

In order to design a realistic session, I have begun analyzing historic traffic patterns along the Moffat Route, from North Yard westward.  The situation varies greatly over time, so I am choosing a few sample periods.  The first era I'm studying is the mid-1980s, during Rio Grande ownership. 

Below is a mini-summary of traffic during that period.  Odd numbers are westbound, even numbers eastbound.

Number	Dir	Time in/out	Comments
187	WB	5:30	Intermodal, autoracks from BN. UPS to Roper.
183	WB	6:00	Cargill export grain and other manifest freight.  As needed.
136-6	EB	6:00	Manifest, lots of lumber from SP
102	EB	8:00	Railblazer, TOFC
5	WB	8:30	Amtrak California Zephyr
100	EB	11:45	Intermodal, autoracks from SP to BN
103	WB	18:00	RailBlazer TOFC
101	WB	19:30	intermodal, autoracks from BN to SP
6	EB	20:00	Amtrak California Zephyr
195	WB	20:00	TOFC, City Market trailers on end with extra caboose in middle.
134-6	EB	20:30	TOFC from Roper, often head-end tonnage.
709	WB	flex	CSUX, Nixon to Axial, empties, bi-weekly
710	EB	flex	CSUX, Axial to Nixon/Drake, loads, Wed/Sat.
702	EB	flex	PSCX, EB loads from Energy to Cherokee, daily
701	WB	flex	PSCX, WB empty from Cherokee to Energy, weekdays
717	WB	flex	CSUX empties from Nixon to Energy, weekly
718	EB	flex	CSUX loads from Energy to Nixon, weekly
713	WB	flex	DRGW hoppers, empty to Energy, weekly
714	EB	flex	DRGW hoppers, loads from Energy to Naples, Illinois, weekly

Now, we factor in the realities of my layout, the limited number of passing sidings, and the actual bridge connections at each end (none!).  From this we distill the above list into a workable two-person operating scheme, which I will call the Basic 1986 Session (daylight).

 
Initial Set-up
Number Location Comments
709 Denver CSUX, Nixon to Axial, empties
102 Clay Railblazer, TOFC
702 Winter Park PSCX, EB loads from Energy to Cherokee
187 North Yard (NY) Intermodal, autoracks from BN

The operators then perform these jobs in sequence:

Road Crew- Movements

Comments

Yard Jobs
187 to Cliff
102 to Rocky 102 to TOFC ramp
187 to Tabernash Cut power from 102 and service
702 to NY Cut power from 702 and service
187 to Winter Park (Becomes 100) Assemble 181 freight
709 to Tabernash Power 181 on yard lead
100 to Denver Cut power from 100 and service
709 to Winter Park (Becomes 710) Break up 100
181 to Tabernash Power 103 and move to Rocky
103 to Plain

Which leaves us with this:

 
Ending Disposition:  
No. Location Comments
103 Plain Railblazer
181 Tabernash to become 136-6
710 Winter Park CSUX

Testing this in real time with a single operator, I find that it takes at least 45 minutes in real time to complete.  It would be somewhat faster with multiple operators. I created an Excel form which I simply call "Dispatch Form A-1986"; I print this out and follow the steps, marking off each as I go to prevent catastrophe and gridlock.

 

As you can see, this is a much-simplified operating scheme.  You'll also notice that I haven't included the Ski Train or the Amtrak operations.  I need to clear up some yard space before I can take that on!

Jumping back to the past, say 1980, things get much different.  About half of the trains are freights.  Coal is often moved in blocks of coal hoppers added to freight trains.  The Rio Grande Zephyr makes a thrice-weekly round trip over the line.  Winter weekends add a Ski Train turn to Winter Park.  And, there's those pesky cabooses!  Just cutting them from incoming trains and assigning to outbound ones is a full-time job on this railroad.

Other Types of Operating Session

Under Union Pacific ownership, the vast majority of traffic is coal trains.  Moving these trains up and down the mountain is the dominant feature of operations.  The yard operator actually has a lot to do, though, allocating power for these long trains and finding yard space.  Throw in a daily freight train, Amtrak, a seasonal Ski Train, and some BNSF trackage rights trains, and it becomes a very crowded railroad.

After some testing, I find the following scheme to work best.  An operating session includes the following:

  • Two coal trains, 20 cars max plus three locomotives (2+1 DPU)
  • One UP freight (MDVRO, which becomes MRODV)
  • One BNSF freight (MDENSTO, which becomes MSTODEN)
  • Amtrak's California Zephyr, trains 5 / 6.

The basic scheme is fairly simple.  I operate six trains; a coal train is followed by one of the freights or the Amtrak train, followed by another coal train, followed by a freight or Amtrak, and so on.  Or to put it another way, I alternate with one coal train and one shorter train of my choice. I have just enough yard space to make it work, assuming the coal trains average less than 20 cars. It's a challenging job finding sufficient yard space, sequencing the movements, keeping trains out of each other's way... in other words, it's a lot like a real dispatcher's job!

 

Southern Pacific era operations somewhat different from the UP style. There is a a slight increase in the manifest freight traffic, and no BNSF trains.  Freight cars now include intermodal and autorack cars.  I find that by limiting myself to a pair of coal trains, congestion is reduced dramatically.

SP manifest trains include basic general freight (RODVM/DVROM, OADVF/DVOAF), lumber trains, and intermodal trains (RODVT/DVROT).  The intermodal trains can also include basically any kind of general freight to fill out length.

Amtrak can run one or two trains, depending on how passenger-heavy I want the session, plus the Ski Train runs with Espee power.

BN / BNSF Yard Transfers are now possible, with the completion of the Joint Line section.  Occasionally I send a couple of BN units up from the Joint to North Yard and take back a cut of interchange cars. These transfer moves just wait on spare yard tracks near DUT until needed, when I bring them back and trade out other cars for interchange.  Post-1996, the power will include BNSF-painted units.


And, there are plenty of times when I just want to run some trains around, so I certainly don't always adhere to a schedule.


 

(c)  James R. Griffin.  All rights reserved.