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Maximizing Railroad Engineering Capacity: Importance and Calculation Methods

Learn about the significance of capacity in railroad engineering and how to calculate it effectively for efficient transportation systems. Explore parameters, examples, and practical applications. Discover why capacity is crucial for future demand and growth in intermodal traffic.

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Maximizing Railroad Engineering Capacity: Importance and Calculation Methods

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  1. CE 515 Railroad Engineering Capacity Source: REES Module 6 and NDSU MPC Course Module “Transportation exists to conquer space and time -”

  2. What is Capacity? • General: Capacity is a measure of the ability to move a specific amount of traffic over a defined rail line with a given set of resources under a specific service plan. • Track Capacity: The highest volume that can be moved over a subdivision under a specified schedule and operating plan while not exceeding a defined threshold.

  3. TheoreticalandPractical http://pcgladiator.blogspot.com/2008/01/rail-yards.html http://sekbp.com/transportation.html

  4. Why is it important? • 29 Million car loads produced 1.6 trillion ton-miles • 110-car grain train is equivalent to 460 trucks • Class 1 rail produces 405 revenue ton-miles/gallon while a truck only produces 127

  5. Why is it Important? • By 2035 it is expected the demand will be 88% more • Intermodal traffic is expected to increase 3-6% a year REES Module 6

  6. Parameters of Capacity • Average Train speed is miles traveled divided by total hours of operation. • It does not include time waiting at terminals, pick up/delivery wait time, or the time in storage yards.

  7. Parameters of Capacity • Average delay does not include scheduled wait times. • Delay ratio is the percentage of time a train is delayed unscheduled. • On Time Percentage is the percentage of trains that arrive on or ahead of schedule.

  8. Calculating Capacity NDSU MPC Course Module

  9. Calculating Capacity NDSU MPC Course Module

  10. Calculating Capacity • Federal Two types: E and F NDSU MPC Course Module

  11. Capacity Example NDSU MPC Course Module

  12. Practical Capacity NDSU MPC Course Module

  13. Practical Capacity NDSU MPC Course Module

  14. Single Track Systems REES Module 6

  15. Single Track System REES Module 6

  16. Train Delay by Volume • Delays increase exponentially as volume increases REES Module 6

  17. Priority Highest- Passenger Intermodal Bulk Commodity Lowest- Road Switchers http://www.usaasc.info/alt_online/printer_friendly.cfm?iid=0808

  18. Questions? The NDSU MPC Course Module can be found at http://www.translearning.org/schedule/details.php?eventID=938

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