GMT - Gross Million Tonne - Statistics in IR

 

GMT - Gross Million Tonne (Statistics in IR)

• Source: Click for Railway Board Letter No. 2024/I & Trans. Cell/GMT dated 24.04.2024 

• GMT stands for Gross Million Tonne 

What is GMT ? 

• Gross = Total Load i.e., Carrying Capacity (Tare Load + Payload) 

• Million = 10 Lakhs

• Tonne = 1000 Kgs 

• I.e., 100 Crores Kgs  or 1 Million Tonne 

• GMT is a primary performance metric   - serves 3 groups of Railway Statistics in IR Statistics Manual i.e., 1. Economic Statistics 2. Transportation Statistics & 3. Administrative Statistics. 

• GMT data of every train on every line  - captured on FOIS / ICMS / CoA

•  FOIS stands for Freight Operations Information System 

• ICMS stands for Integrated Coaching Management System

• CoA stands for Control Office Application

• Traffic Density Data (GMT)  - an integral part of Indian Railways IT Systems architecture. 

Why GMT is important: GMT data is a crucial decision criterion for 

• Planned Track Renewals 

• Preventive maintenance (like periodicity of USFD - Ultrasonic Flaw Detection) 

• Riding quality (Track degradation model) 

• Effective allocation of rails, track materials & resources, among works/projects under Plan Heads 11 - New Lines, 15 - Doubling & 31 - Track Renewals.

Existing mechanism (up to 2022-23) - calculation of GMT 

• Computed by Zonal Railways 

• Basis is GTKM & Lead (Kms) 

• Manually input in TMS - Track Management System 

•  Limitation is for sections with more than 2 lines (i.e., 3rd/4th line), the line wise GMT data is not available.  

New mechanism - from 2023-24 onwards   - calculation of GMT 

• Zonal Railways would provide GMT data by May of the following year.  Example: For 2023-24 the data should be available by May 2024 and so on. 

• All GMT data in TMS  - sync (API based) with the systems architecture

• API stands for Architecture Programming Interface

• No physical copies. No manual input in TMS - Track Management System

• No signed copies in parallel 

• GMT data from FOIS/ICMS/CoA would flow daily into TAMS - Traffic Accounts Management System   ( SMRTI - Statistical Module on Rail Transport Information) 

• From TAMS to TMS 

• From 2024-25 onwards - GMT data - refined format i..e, Block section wise Line wise  (earlier line was not available) 

• Zonal Railways Statistical Units (under PFA)  - issue Monthly & Annual GMT Data

• SPOC for Statistical Information Module   - GM/TAMS @ CRIS 

• SPOC for input data of FOIS/ICMS/CoA - GM/OR @ CRIS

• SPOC stands for Single Point of Contact 

• It is calculated for Railway Tracks involving multiple factors and is a complex process. 

• It is determined through detailed engineering analysis and simulation. 

GMT Calculated for Railway Tracks involving multiple factors.  These are: 

1.  Axle Load: Higher axle loads leads to greater wear and tear. 

2. Train Speed: Higher speeds can cause track degradation. 

3. Train Frequency: The number of trains passing over a track within specified time (Line Capacity) can affect stress & wear on the track. 

4. Track structure & Material: Ballasted or non-ballasted track and the material used play a significant role in determining load capacity & maintenance requirements. 

5. Climate & weather: Extreme temperature or heavy rainfall conditions impact the Track’s durability. 

6. Track maintenance practices: Frequency of track maintenance influences the overall track performance. 

Note: The above instructions are in supersession of any previous instructions on the subject (GMT) and in the event of conflict with any other instructions / part of any other instructions, the above instructions would prevail. 

Key points -  GMT 

1. GMT is a primary performance metric   - serves 3 groups of Railway Statistics in IR Statistics Manual i.e., 1. Economic Statistics 2. Transportation Statistics & 3. Administrative Statistics. 

2. Statistical units in Zonal Railways - under control of PFA 

3. GMT  - Revised policy   w.e.f 01.4.2024 onwards  (or FY 2023-24 onwards) 

4. GMT means Traffic Density Data 

5. GMT data from FOIS/ICMS/CoA would flow daily into TAMS - Traffic Accounts Management System   ( SMRTI - Statistical Module on Rail Transport Information) 

6. From TAMS to TMS  

7. No physical copies.  No signed copies.  No manual input in TMS 

8. From 2024-25 onwards - GMT data - refined format i..e, Block section wise Line wise  (earlier line was not available) 

9. Zonal Railways Statistical Units (under PFA)  - issue Monthly & Annual GMT Data

10. SPOC for Statistical Information Module   - GM/TAMS @ CRIS 

11. SPOC for input data of FOIS/ICMS/CoA - GM/OR @ CRIS 

Abbreviations 

1. GMT  - Gross Million Tonne

2. FOIS - Freight Operations Information System 

3. ICMS - Integrated Coaching Management System

4. CoA - Control Office Application

5. USFD - Ultrasonic Flaw Detection

6. TMS - Track Management System 

7. GTKM - Gross Tonne Kilometer

8. API - Architecture Programming Interface

9. SMRTI - Statistical Module on Rail Transport Information 

10. SPOC - Single Point of Contact 

11. CRIS - Centre for Railway Information Systems

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