SSI 100 TOB Clarification
02/05/09 09:12
Robbie:
As you note in the SSI Instruction below, "all speeds are subject to modification by speed restrictions indicated under individual subdivision special instructions". The speed of trains over 80 TOB on the Seligman Subdivision is the "individual subdivision special instruction " that modifies the speed shown in the SSI. A 16,000 ton grain train would have over 80 TOB and therefore is 55 mph at the locations identified in Item 1(D) Speed – Other, Note there are additional speed restrictions in Item 1(D) for WWD Freight trains between Kingman and Topock.
Prior to merger, former Santa Fe was working on making the railroad a two speed railroad (70 and 55). Following merger and with signal system going to 4 signal aspects, this became a reality. You may be thinking about the old instructions that required trains over 90 TOB to operate at 45 mph. The other Subdivisions you mention do not have the grade conditions found on the Seligman Sub so the instruction stating "includes trains 100 TOB and over" covers the operation on those Subdivisions. As you know, the Seligman Subdivision is one of the most unique on the railroad and requires more specific instructions. Again, those instructions are outlined in the timetable and supersede the SSI. The SSI instruction requiring trains over 100 TOB to operate at 45 mph is an old BN instruction and still applicable on some portions of the former BN. The railroad you operate on is a two speed railroad. The only restrictions to 45 speed are grade conditions or car kind specific.
K. McReynolds
Supt Operating Practices
_____________________________________________ From: Cunningham, Michael R Sent: Wednesday, January 28, 2009 5:17 AM To: McReynolds, Kevin C Cc: 'jjohnson316@cableone.net'; 'jrjohnnyb@yahoo.com'; 'harpo@citilink.net' Subject: SSI 100 TOB
Kevin,
I have seen your previous email about the speed restrictions for trains up to and over 100 TOB. In the examples you gave you did not adress a train such as a 16,000 ton grain train that is over 100 TOB. I do realize that on the Seligman Sub any westbound train over 80 TOB is 55 mph. The SSI gives a more restrictive speed for trains over 100 TOB. The problem I am seeing here is the fact that the only thing that is said in the Seligman Sub timetable about trains over 100 TOB is for solid doublestack trains. On the Gallup, El Paso, Clovis and Coronado subs there is a line that states "including trains 100 TOB and over". Why has this line been included in all of the other subdivisions and excluded from the Seligman Sub? If this line were to be added to the Seligman Sub I believe it would take care of all the confusion.
Thank You,
Robby Cunningham
In the individual division timetables, the number at the bottom of the schedule column entitled "Miles to Next Station" indicates total miles on the subdivision.
1. Speed Restrictions
All speeds are subject to modification by speed restrictions indicated under individual subdivision special instructions.
Passenger trains will be governed by freight train speed if passenger train speed is not specified under individual subdivision special instructions.
All trains consisting entirely of passenger equipment as well as locomotives without cars (light engines) will be considered passenger trains and may operate at passenger speeds where provided. This includes Amtrak, commuter trains, business cars and passenger equipment modified to serve as track inspection, track geometry or similar test cars. Refer to 1(B) regarding maximum authorized speed of engines (locomotives).
Unless defined differently in the individual subdivision special instruction, tons per operative brake (TOB) is defined as the gross trailing tonnage of the train divided by the total number of control valves.
Maximum Speeds Permitted
Freight trains up to 100 TOB.................................................60 MPH.
Trains 100 TOB and over......................................................45 MPH.
Trains handling empty cars...................................................55 MPH.
Exceptions:
1. Passenger/commuter equipment.
2. Empty articulated double stack equipment.
3. Empty coal trains may operate at a maximum authorized
speed of 60 MPH if train list indicates no speed
restricted equipment in train.
4. AutoMax Cars. (Refer to 1(C) regarding empty intermodal
Gallup Sub
1. Speed Regulations
1(A). Speed—Maximum
Passenger Freight
Includes trains 100 TOB and over
MP 0.0 to MP 10.1 ................................................................ 55 MPH*.
MP 27.4 to MP 58.7 ........................................ 90 MPH. ...... 55 MPH*.
MP 58.7 to MP 128.8, Main 2 .......................... 79 MPH. ...... 55 MPH*.
MP 58.7 to MP 85.9, Main 1 ............................ 79 MPH. ...... 55 MPH*.
MP 85.9 to MP 128.8, Main 1, WWD ............... 79 MPH. ...... 55 MPH*.
MP 85.9 to MP 128.8, Main 1, EWD ................ 90 MPH. ...... 55 MPH*.
MP 128.8 to 157.6, Main 2, WWD ................... 90 MPH. ...... 55 MPH*.
MP 128.8 to MP 157.6, Main 2, EWD .............. 79 MPH. ...... 55 MPH*.
MP 128.8 to MP 157.6, Main 1 ........................ 79 MPH. ...... 55 MPH*.
MP 157.6 to MP 284.5 .................................... 90 MPH. ...... 55 MPH*.
El Paso Sub
1. Speed Regulations
1(A). Speed—Maximum
Freight
MP 915.0 to MP 923.7, including trains over 100 TOB ............... 55 MPH.
MP 923.7 to MP 932.4, including trains over 100 TOB ............... 49 MPH.
MP 934.4 to MP 1155.1, including trains over 100 TOB ............. 49 MPH.
Coronado Sub
1. Speed Regulations
1(A). Speed—Maximum
Freight
MP 0.0 to MP 0.7 ........................................................................ 30 MPH.
MP 0.7 to MP 42.5, including trains 100 TOB and over .............. 49 MPH.
MP 42.5 to MP 44.0 .................................................................... 15 MPH.
MP 44.0 through dumper .............................................................. 2 MPH.
MP 44.5 to MP 45.4 .................................................................... 15 MPH.
West leg of wye at Platt ............................................................. 30 MPH.
Clovis Sub
1. Speed Regulations
1(A). Speed—Maximum
Freight
MP 655.7 to MP 897.6, including trains 100 TOB and over ........ 55 MPH.
(EXCEPTION: 35 MPH for westward trains averaging 90 tons to 105 tons
per operative brake and 25 MPH for westward trains averaging over 105
tons per operative brake between MP 856.3 and MP 879.0, Head End
Only.)
Unless otherwise restricted, the maximum speed for freight trains is 70
MPH provided:
1. Train does not contain empty car(s). Refer to SSI 1(C) for determining
speed for multiplatform, intermodal equipment.
2. Train does not exceed 8,500 feet.
3. Train does not average more than 80 TOB.
4. Engineer can control speed to 70 MPH without use of air brakes.
(If unable to control speed to 70 MPH on long descending grades, two
additional attempts are allowed to control speed with dynamic brake at
slower speeds before speed must be reduced to 55 MPH while
negotiating descending grade.)
Exceptions—Trains consisting entirely of intermodal equipment,
autoracks (equipment designed to carry automobiles/trucks) or a
combination of both
Seligman Sub
1. Speed Regulations
1(A). Speed—Maximum
Passenger Freight
East Winslow to Needles ..................................... 79 MPH. ....... 55 MPH.
MP 284.5 to MP 326.7, EWD ............................... 90 MPH. ....... 55 MPH.
MP 362.1 to MP 418.3 ......................................... 90 MPH. ....... 55 MPH.
MP 446.8 to MP 578.0, against the current
of traffic in DTB territory ................................. 79 MPH. ....... 55 MPH.
MP 484.0 to MP 514.0, Main 2 ............................ 90 MPH. ....... 55 MPH.
MP 465.8 to MP 578.0, Main 1 ............................ 90 MPH. ....... 55 MPH.
However, the maximum speed for freight trains is 70 MPH provided:
1. Train does not contain empty car(s). Refer to SSI 1(C) for
determining speed for multiplatform, intermodal equipment.
2. Train does not exceed 8,500 feet.
3. Train does not average more than 80 TOB.
4. Engineer can control speed to 70 MPH without use of air
brakes. (If unable to control speed to 70 MPH on long descending
grades, two additional attempts are allowed to control speed with
dynamic brake at slower speeds before speed must be reduced to 55
MPH while negotiating descending grade.)
Exceptions—Trains consisting entirely of intermodal equipment,
autoracks (equipment designed to carry automobiles/trucks) or a
combination of both:
• Same as above except train must not average more than 90
tons per operative brake under item (3).
Trains consisting entirely of loaded double-stack equipment:
• Same as above except train must not average more than
105 tons per operative brake under item (3).
As you note in the SSI Instruction below, "all speeds are subject to modification by speed restrictions indicated under individual subdivision special instructions". The speed of trains over 80 TOB on the Seligman Subdivision is the "individual subdivision special instruction " that modifies the speed shown in the SSI. A 16,000 ton grain train would have over 80 TOB and therefore is 55 mph at the locations identified in Item 1(D) Speed – Other, Note there are additional speed restrictions in Item 1(D) for WWD Freight trains between Kingman and Topock.
Prior to merger, former Santa Fe was working on making the railroad a two speed railroad (70 and 55). Following merger and with signal system going to 4 signal aspects, this became a reality. You may be thinking about the old instructions that required trains over 90 TOB to operate at 45 mph. The other Subdivisions you mention do not have the grade conditions found on the Seligman Sub so the instruction stating "includes trains 100 TOB and over" covers the operation on those Subdivisions. As you know, the Seligman Subdivision is one of the most unique on the railroad and requires more specific instructions. Again, those instructions are outlined in the timetable and supersede the SSI. The SSI instruction requiring trains over 100 TOB to operate at 45 mph is an old BN instruction and still applicable on some portions of the former BN. The railroad you operate on is a two speed railroad. The only restrictions to 45 speed are grade conditions or car kind specific.
K. McReynolds
Supt Operating Practices
_____________________________________________ From: Cunningham, Michael R Sent: Wednesday, January 28, 2009 5:17 AM To: McReynolds, Kevin C Cc: 'jjohnson316@cableone.net'; 'jrjohnnyb@yahoo.com'; 'harpo@citilink.net' Subject: SSI 100 TOB
Kevin,
I have seen your previous email about the speed restrictions for trains up to and over 100 TOB. In the examples you gave you did not adress a train such as a 16,000 ton grain train that is over 100 TOB. I do realize that on the Seligman Sub any westbound train over 80 TOB is 55 mph. The SSI gives a more restrictive speed for trains over 100 TOB. The problem I am seeing here is the fact that the only thing that is said in the Seligman Sub timetable about trains over 100 TOB is for solid doublestack trains. On the Gallup, El Paso, Clovis and Coronado subs there is a line that states "including trains 100 TOB and over". Why has this line been included in all of the other subdivisions and excluded from the Seligman Sub? If this line were to be added to the Seligman Sub I believe it would take care of all the confusion.
Thank You,
Robby Cunningham
In the individual division timetables, the number at the bottom of the schedule column entitled "Miles to Next Station" indicates total miles on the subdivision.
1. Speed Restrictions
All speeds are subject to modification by speed restrictions indicated under individual subdivision special instructions.
Passenger trains will be governed by freight train speed if passenger train speed is not specified under individual subdivision special instructions.
All trains consisting entirely of passenger equipment as well as locomotives without cars (light engines) will be considered passenger trains and may operate at passenger speeds where provided. This includes Amtrak, commuter trains, business cars and passenger equipment modified to serve as track inspection, track geometry or similar test cars. Refer to 1(B) regarding maximum authorized speed of engines (locomotives).
Unless defined differently in the individual subdivision special instruction, tons per operative brake (TOB) is defined as the gross trailing tonnage of the train divided by the total number of control valves.
Maximum Speeds Permitted
Freight trains up to 100 TOB.................................................60 MPH.
Trains 100 TOB and over......................................................45 MPH.
Trains handling empty cars...................................................55 MPH.
Exceptions:
1. Passenger/commuter equipment.
2. Empty articulated double stack equipment.
3. Empty coal trains may operate at a maximum authorized
speed of 60 MPH if train list indicates no speed
restricted equipment in train.
4. AutoMax Cars. (Refer to 1(C) regarding empty intermodal
Gallup Sub
1. Speed Regulations
1(A). Speed—Maximum
Passenger Freight
Includes trains 100 TOB and over
MP 0.0 to MP 10.1 ................................................................ 55 MPH*.
MP 27.4 to MP 58.7 ........................................ 90 MPH. ...... 55 MPH*.
MP 58.7 to MP 128.8, Main 2 .......................... 79 MPH. ...... 55 MPH*.
MP 58.7 to MP 85.9, Main 1 ............................ 79 MPH. ...... 55 MPH*.
MP 85.9 to MP 128.8, Main 1, WWD ............... 79 MPH. ...... 55 MPH*.
MP 85.9 to MP 128.8, Main 1, EWD ................ 90 MPH. ...... 55 MPH*.
MP 128.8 to 157.6, Main 2, WWD ................... 90 MPH. ...... 55 MPH*.
MP 128.8 to MP 157.6, Main 2, EWD .............. 79 MPH. ...... 55 MPH*.
MP 128.8 to MP 157.6, Main 1 ........................ 79 MPH. ...... 55 MPH*.
MP 157.6 to MP 284.5 .................................... 90 MPH. ...... 55 MPH*.
El Paso Sub
1. Speed Regulations
1(A). Speed—Maximum
Freight
MP 915.0 to MP 923.7, including trains over 100 TOB ............... 55 MPH.
MP 923.7 to MP 932.4, including trains over 100 TOB ............... 49 MPH.
MP 934.4 to MP 1155.1, including trains over 100 TOB ............. 49 MPH.
Coronado Sub
1. Speed Regulations
1(A). Speed—Maximum
Freight
MP 0.0 to MP 0.7 ........................................................................ 30 MPH.
MP 0.7 to MP 42.5, including trains 100 TOB and over .............. 49 MPH.
MP 42.5 to MP 44.0 .................................................................... 15 MPH.
MP 44.0 through dumper .............................................................. 2 MPH.
MP 44.5 to MP 45.4 .................................................................... 15 MPH.
West leg of wye at Platt ............................................................. 30 MPH.
Clovis Sub
1. Speed Regulations
1(A). Speed—Maximum
Freight
MP 655.7 to MP 897.6, including trains 100 TOB and over ........ 55 MPH.
(EXCEPTION: 35 MPH for westward trains averaging 90 tons to 105 tons
per operative brake and 25 MPH for westward trains averaging over 105
tons per operative brake between MP 856.3 and MP 879.0, Head End
Only.)
Unless otherwise restricted, the maximum speed for freight trains is 70
MPH provided:
1. Train does not contain empty car(s). Refer to SSI 1(C) for determining
speed for multiplatform, intermodal equipment.
2. Train does not exceed 8,500 feet.
3. Train does not average more than 80 TOB.
4. Engineer can control speed to 70 MPH without use of air brakes.
(If unable to control speed to 70 MPH on long descending grades, two
additional attempts are allowed to control speed with dynamic brake at
slower speeds before speed must be reduced to 55 MPH while
negotiating descending grade.)
Exceptions—Trains consisting entirely of intermodal equipment,
autoracks (equipment designed to carry automobiles/trucks) or a
combination of both
Seligman Sub
1. Speed Regulations
1(A). Speed—Maximum
Passenger Freight
East Winslow to Needles ..................................... 79 MPH. ....... 55 MPH.
MP 284.5 to MP 326.7, EWD ............................... 90 MPH. ....... 55 MPH.
MP 362.1 to MP 418.3 ......................................... 90 MPH. ....... 55 MPH.
MP 446.8 to MP 578.0, against the current
of traffic in DTB territory ................................. 79 MPH. ....... 55 MPH.
MP 484.0 to MP 514.0, Main 2 ............................ 90 MPH. ....... 55 MPH.
MP 465.8 to MP 578.0, Main 1 ............................ 90 MPH. ....... 55 MPH.
However, the maximum speed for freight trains is 70 MPH provided:
1. Train does not contain empty car(s). Refer to SSI 1(C) for
determining speed for multiplatform, intermodal equipment.
2. Train does not exceed 8,500 feet.
3. Train does not average more than 80 TOB.
4. Engineer can control speed to 70 MPH without use of air
brakes. (If unable to control speed to 70 MPH on long descending
grades, two additional attempts are allowed to control speed with
dynamic brake at slower speeds before speed must be reduced to 55
MPH while negotiating descending grade.)
Exceptions—Trains consisting entirely of intermodal equipment,
autoracks (equipment designed to carry automobiles/trucks) or a
combination of both:
• Same as above except train must not average more than 90
tons per operative brake under item (3).
Trains consisting entirely of loaded double-stack equipment:
• Same as above except train must not average more than
105 tons per operative brake under item (3).
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