RR-02 RR-02-02-02 — Track Warrant Control / Dark Territory
This process manages the control of track warrants in dark territory for train movements, ensuring safe and efficient rail operations.
🗺 BPMN Process Flow
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📋 Process Attributes
| Process ID | RR-02-02-02 |
|---|---|
| Domain Family | NETWORK & PLANNING |
| L1 Domain | Dispatching & Train Movement |
| L2 Process Group | Track Warrant Control / Dark Territory |
| Trigger | A Train Dispatcher receives a request to move a train into or through a dark territory segment. |
| Outcome | The train is granted permission to enter the dark territory and proceeds safely under controlled conditions. |
| Systems | NetControl I-ETMS EHMS |
| Regulatory Hooks | 49 CFR Part 232 GCOR |
📋 L4 Process Steps
| Step | Name | Role | System | Input | Output | KPI | Pain Point / Risk | Decision? | Exception? |
|---|---|---|---|---|---|---|---|---|---|
| 1.1 | Receive Track Warrant Request | Train Dispatcher | NetControl / CADx | Track warrant request from a train crew | Acknowledgment of receipt | Response time to track warrant request under 10 minutes | Delays in processing requests | N | N |
| 1.2 | Verify Track Conditions | Control Operator | I-ETMS | Track condition data from wayside defect detectors | Track condition report | Accuracy of track condition assessment above 95% | Inaccurate or outdated track data | Y | Y |
| 1.3 | Review Train Schedule | Train Dispatcher | NetControl / CADx | Current train schedule and dark territory status | Updated schedule with dark territory assignment | Schedule adherence rate above 90% | Conflicts in train schedules | N | Y |
| 1.4 | Issue Track Warrant | Train Dispatcher | NetControl / CADx | Verified track conditions and updated schedule | Track warrant document | Timeliness of track warrant issuance under 5 minutes | Errors in track warrant documents | N | Y |
| 1.5 | Notify Train Crew | Train Dispatcher | NetControl / CADx | Track warrant document | Acknowledgment from train crew | Crew notification accuracy above 98% | Communication failures with train crews | N | Y |
| 1.6 | Monitor Train Movement | Control Operator | I-ETMS | Track warrant and train movement data | Train position updates | Real-time monitoring accuracy above 95% | Loss of communication with trains | Y | Y |
| 1.7 | Conduct Air Brake Test | Locomotive Engineer | EHMS | Track warrant and train status | Air brake test report | Pass rate of air brake tests above 98% | Defective air brakes | Y | Y |
| 1.8 | Update Track Warrant Status | Train Dispatcher | NetControl / CADx | Air brake test report and train position updates | Updated track warrant status | Status update frequency above 1 update per hour | Inaccurate or delayed status updates | N | Y |
| 1.9 | Review and Adjust Schedule | Train Dispatcher | NetControl / CADx | Track warrant status and train performance data | Adjusted train schedule | Schedule adjustment rate above 50% | Inflexible scheduling | Y | Y |
| 1.10 | Finalize Track Warrant Control | Train Dispatcher | NetControl / CADx | Adjusted schedule and final track warrant status | Completed track warrant control record | Completion rate of track warrant control above 95% | Incomplete or inaccurate records | N | Y |
📊 KPIs & Risk Register
KPIs
Response time to track warrant request under 10 minutes Accuracy of track condition assessment above 95% Schedule adherence rate above 90% Timeliness of track warrant issuance under 5 minutes Crew notification accuracy above 98% Real-time monitoring accuracy above 95% Pass rate of air brake tests above 98% Status update frequency above 1 update per hour Schedule adjustment rate above 50% Completion rate of track warrant control above 95%
Key Risks
Air brake test defect released to the road Conflicts in train schedules Errors in track warrant documents Communication failures with train crews Loss of communication with trains
Swim Lanes
Train Dispatcher · 1.1, 1.3, 1.4, 1.5, 1.8, 1.9, 1.10 Control Operator · 1.2, 1.6 Locomotive Engineer · 1.7