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Subway Process Study (Operations Management, B-School)
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Subway Process Study (Operations Management, B-School)

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Published in: Business, Education

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Transcript

  • 1. An Underground Odyssey Dong Jun Park Scott Hice James Igoe Operations Management Professor Orsini Fall 2002
  • 2. Study Limitations
    • Subway turnstile location
      • Thirty-fourth (34th) Street subway entrance
      • Just off of, and under, Path station
      • Single turnstile bank, closest to entrances
    • Time frame
      • Non-peak hours
      • Weekend
    • Tally
      • Anonymous
      • Intuitive assessment of failure cause by observer
      • Number of failures per twenty attempts
      • Multiple failures by a subject is treated as one failure
    • Swipe
      • At least partial entry of card into reader
      • Forward motion of hand
      • Failure: a repeated swipe or exit from the turnstile after an swipe
  • 3. Presumed Defect Causes (Ishikawa)
  • 4. Defect Groupings
        • Tourist
        • Immigrant
        • Aged
        • Children
        • Insufficient fare
        • Defective card
        •  Rushed (pressed from behind or by exiting)
        •  Wet (or related weather conditions)
        • Closed (attempts at entry into closed turnstiles)
        • Other
  • 5. Defect Statistics (np Chart)
  • 6. Turnstile Failures (np Chart)
  • 7. Defect Analysis
  • 8. Process Improvements (Alternative Technologies)
    • Change Card Reader Mechanism
        • Tourist
        • Immigrant
        • Aged
        • Children
        • Rushed (pressed from behind or by exiting)
        • Wet (or related weather conditions)
    • Redesign turnstile entry
        • Closed (attempts at entry into closed turnstiles)
    • User Error
        • Insufficient fare
        • Defective card