The results of the Optical Automatic Car Identification (OACI) tests at Chicago conducted from August 16 to September 4, 1975 are presented. The main purpose of this test was to determine the suitability of optics as a principle of operation for an automatic car identification. Readabilities by standard and "modified" scanners were measured. Based on the optical information available in the label-scanner communication channel and the determination of the non-read causes, the label-scanner readability and limit of readability were obtained. Also the same readabilities were obtained using multiplexed data from two scanners, one at each side of the track. The benefits of redundancy in the multiplexed data are based on the analysis of the test results. Conslusions and recommendations are presented. No attempt has been made to evaluate the hardware implementation of the OACI systems used during the Chicago test.

  • Supplemental Notes:
    • Sponsored by Federal Railroad Administration, U.S. DOT.
  • Corporate Authors:

    Transportation Systems Center

    55 Broadway, Kendall Square
    Cambridge, MA  United States  02142
  • Authors:
    • Ingrao, H C
  • Publication Date: 1976-5

Media Info

  • Features: Figures; Tables;
  • Pagination: 186 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00139459
  • Record Type: Publication
  • Source Agency: Federal Railroad Administration
  • Report/Paper Numbers: FRA/ORD-76/249 Final Rpt.
  • Files: TRIS, USDOT
  • Created Date: Oct 6 1976 12:00AM