CONTROLLING COSTS. IMPROVING LTL DELIVERY SERVICE QUALITY WITH STATISTICAL PROCESS CONTROL

This article describes a study conducted in 1987 to explore the use of Statistical Process Control (SPC) for improving LTL delivery service at Yellow Freight System, Inc. Some conclusions and recommendations are: a carrier has to define a traffic lane that is both conceptually sound and practical for statistical process control of delivery service; a carrier has to obtain accurate measurements of delivery service for the shipments of each subgroup; the practice of closing on weekends by customers can severely bias measurements of total delivery days; though this study involved a case analysis, the methodological problems are not idiosyncratic to Yellow Freight System, Inc., the recommended processes and solutions are generally applicable to other LTL carriers.

• Corporate Authors:

  Regular Common Carrier Conference, ATA

  2200 Mill Road, Suite 350
  Alexandria, VA  United States  22314-4677
• Authors:
  • Tyworth, J E
  • Lemons, P
  • Ferrin, B
• Publication Date: 1990-7

Media Info

• Features: Figures; Tables;
• Pagination: p. 8-14
• Serial:
  • TRANSPORTATION EXECUTIVE UPDATE
  • Volume: 4
  • Issue Number: 4

Subject/Index Terms

• TRT Terms: Carriers; Cost control; Delivery service; Freight service; Quality of service; Shipments; Statistical analysis; Statistical quality control; Studies
• Subject Areas: Data and Information Technology; Freight Transportation; Highways; Operations and Traffic Management; Planning and Forecasting;

Filing Info

• Accession Number: 00608675
• Record Type: Publication
• Files: TRIS
• Created Date: May 31 1991 12:00AM