Positive Train Control Interoperability Test Support: Radio Frequency Desense Testing

The Federal Railroad Administration (FRA) sponsored research that was conducted by Transportation Technology Center, Inc. (TTCI) to evaluate the performance of the Advanced Civil Speed Enforcement System (ACSES) 220 MHz data radios and the Interoperable Train Control (ITC)-compliant 220 MHz data radios when they were in close geographical proximity. The radio frequency (RF) evaluation included: Developing test plans and procedures based on railroad input and deployment details; Performing laboratory and field radio desensitization (desense) tests; Executing tests to demonstrate the effectiveness of one potential mitigation technique; and Analyzing and reporting results. The Positive Train Control (PTC) tests, conducted from March, 2013 to March, 2015 at the Transportation Technology Center (TTC), quantified the potential degradation of communications system performance for dissimilar PTC radios that operate in the same geographical region. The results of these tests led to the establishment of the Northeast Corridor (NEC) Communications team to collaborate and clearly identify the extent of the challenges the NEC railroads face in deploying dissimilar PTC radio networks, and, equally important, to promote the successful deployment of the two dissimilar PTC systems along the NEC.


  • English

Media Info

  • Media Type: Digital/other
  • Features: Photos;
  • Pagination: 4p
  • Serial:
    • Research Results
    • Issue Number: RR 18-10
    • Publisher: Federal Railroad Administration
  • Publication flags:

    Open Access (libre)

Subject/Index Terms

Filing Info

  • Accession Number: 01675684
  • Record Type: Publication
  • Files: TRIS, ATRI, USDOT
  • Created Date: Jul 16 2018 12:20PM