RR-03 RR-03-02-01 — Hump and Flat Classification
The process involves the classification of freight cars at a hump yard using gravity-assisted sorting to separate them into different tracks based on their destination.
🗺 BPMN Process Flow
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📋 Process Attributes
| Process ID | RR-03-02-01 |
|---|---|
| Domain Family | OPERATIONS |
| L1 Domain | Terminal & Yard Operations |
| L2 Process Group | Hump and Flat Classification |
| Trigger | Arrival of a train with mixed freight cars at the hump yard |
| Outcome | Efficient separation and classification of freight cars for further transportation or storage. |
| Systems | NetControl I-ETMS Umler EHMS ISS / SSDX CHARM |
| Regulatory Hooks | 49 CFR Part 232 GCOR |
📋 L4 Process Steps
| Step | Name | Role | System | Input | Output | KPI | Pain Point / Risk | Decision? | Exception? |
|---|---|---|---|---|---|---|---|---|---|
| 1.1 | Train Arrival Notification | Yardmaster | NetControl | Train arrival notification from Harriman Dispatching Center (HDC) | Updated train schedule in NetControl | Train arrival time accuracy within 5 minutes | Delayed train arrivals due to unexpected issues | N | Y |
| 1.2 | Pre-Classification Inspection | Car Inspector (Carman) | EHMS | Train manifest and car details | Inspection report with any defects noted | Defect detection rate above 95% | Missed critical defects leading to safety risks | Y | N |
| 1.3 | Hump Yard Preparation | Switchman/Switch Foreman | I-ETMS | Inspection report and train schedule | Prepared hump yard with correct track assignments | Track preparation time under 30 minutes | Incorrect track assignments causing delays | N | Y |
| 1.4 | Train Pushing and Classification | Locomotive Engineer | Umler | Hump yard preparation details | Sorted cars on respective tracks | Classification accuracy above 98% | Misclassification leading to rehandling | Y | N |
| 1.5 | Post-Classification Inspection | Car Inspector (Carman) | EHMS | Sorted cars on tracks | Final inspection report with any defects noted | Defect detection rate above 95% | Missed critical defects leading to safety risks | Y | N |
| 1.6 | Train Departure Notification | Yardmaster | NetControl | Final inspection report and track assignments | Updated train schedule in NetControl | Train departure time accuracy within 5 minutes | Delayed train departures due to unexpected issues | N | Y |
| 1.7 | Settlement Data Exchange | Switchman/Switch Foreman | ISS / SSDX | Train departure details and car assignments | Settled data for interline operations | Data exchange accuracy above 99% | Inaccurate data leading to settlement disputes | N | Y |
| 1.8 | Car Hire Accounting Update | Switchman/Switch Foreman | CHARM | Train departure details and car assignments | Updated car hire records | Accounting update accuracy above 98% | Incorrect accounting updates causing financial discrepancies | N | Y |
| 1.9 | Terminal Dwell Time Monitoring | Yardmaster | NetControl | Train arrival and departure times | Dwell time report | Terminal dwell under 24 hours | Excessive dwell times leading to operational delays | N | Y |
| 1.10 | Train Speed Monitoring | Locomotive Engineer | I-ETMS | Train speed data from I-ETMS | Speed compliance report | Train speed above 20 mph | Slow train speeds leading to inefficiencies | Y | N |
| 1.11 | Defect Reporting and Resolution | Car Inspector (Carman) | EHMS | Inspection reports with defects | Defect resolution plan | Defect resolution time within 24 hours | Delayed defect resolutions causing safety risks | Y | N |
| 1.12 | Final Train Departure | Yardmaster | NetControl | Defect resolution plan and train schedule | Train departure confirmation | Train departure time accuracy within 5 minutes | Delayed final train departures due to unexpected issues | N | Y |
📊 KPIs & Risk Register
KPIs
Train arrival time accuracy within 5 minutes Defect detection rate above 95% Track preparation time under 30 minutes Classification accuracy above 98% Data exchange accuracy above 99% Accounting update accuracy above 98% Terminal dwell under 24 hours Train speed above 20 mph Defect resolution time within 24 hours Train departure time accuracy within 5 minutes
Key Risks
Air brake test defect released to the road Misclassification leading to rehandling Incorrect accounting updates causing financial discrepancies Excessive dwell times leading to operational delays Slow train speeds leading to inefficiencies Delayed final train departures due to unexpected issues
Swim Lanes
Yardmaster · 1.1, 1.6, 1.9, 1.12 Car Inspector (Carman) · 1.2, 1.5, 1.11 Switchman/Switch Foreman · 1.3, 1.7, 1.8 Locomotive Engineer · 1.4, 1.10