Request for Information (RFI) - Sources Sought FRA Wheel-Rail Interface Modelling

State: Colorado
Level of Government: Federal
  • 16 - Aircraft Components and Accessories
Opps ID: NBD00159391558728684
Posted Date: Feb 21, 2024
Due Date: Mar 6, 2024
Source: Members Only
Request for Information (RFI) - Sources Sought FRA Wheel-Rail Interface Modelling
Contract Opportunity
Notice ID
Related Notice
Department/Ind. Agency
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General Information
  • Contract Opportunity Type: Sources Sought (Original)
  • All Dates/Times are: (UTC-05:00) EASTERN STANDARD TIME, NEW YORK, USA
  • Original Published Date: Feb 21, 2024 08:21 am EST
  • Original Response Date: Mar 06, 2024 12:00 pm EST
  • Inactive Policy: 15 days after response date
  • Original Inactive Date: Mar 21, 2024
  • Initiative:
    • None
  • Original Set Aside:
  • Product Service Code:
  • NAICS Code:
    • 541715 - Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
  • Place of Performance:
    Pueblo , CO

Federal Railroad Administration (FRA) Request for Information (RFI)

Modelling the Effects of Friction Modifiers on Creep Forces in the Wheel-Rail Interface: Model Extension and Implementation


The Federal Railroad Administration (FRA), Office of Research, Development and Technology – Track Research Division is seeking information related to railway vehicle wheel-rail interface modelling, with a specific focus on top of rail (TOR) friction modifiers and lubricants related technologies and capabilities that will be available in the 2022 through 2030 timeframe. Specifically, FRA is seeking comprehensive input to gain insights into TOR friction modifiers and their impact on wheel-rail interaction, including creep forces reduction, and how that would affect the railway system safety and efficiency in revenue service.

It should be noted that this request for Information (RFI) is for informational purposes only; it is not a request for proposal (RFP) or a solicitation for a contract or grant award, and it does not obligate the Government in any way. The Government will not reimburse respondents for any costs associated with responding to this request.

Modeling of Wheel-Rail Friction, Rail Wear, Rolling Contact Fatigue (RCF), and TOR Friction Modifiers and Lubricants

To identify capable research entities, the FRA requests vendors confirm whether they have experience performing various aspects of Model Development and Model Validation and Testing. Vendors should also provide documentation supporting claims. Documentation can include synopsis of projects, studies, research, publications, and corresponding contract numbers (if any). The specific experience and expertise that FRA is seeking include:

  • Model Development

  • Provide documented research related to railway vehicle-track interaction, vehicle dynamics, and effects of TOR friction modifiers and lubricants.

  • Provide experience/documented research into top of rail friction modifier relationship with respect to wear and rolling contact fatigue.

  • Provide previous experience modeling forces at the wheel/rail interface, vehicle dynamics, and TOR friction modifiers and lubricants.

  • Present experience with single wheel lateral to vertical load ratios (L/V’s), creep forces, and varying traction conditions.

  • Present experience with varying baseline conditions.

  • Present TOR materials examined (i.e., water and/or grease based, other)

  • Provide an estimate of time and efforts needed to build upon earlier research findings, if provided with previous FRA-developed code.

  • Present previous railroad industry modeling collaboration.

  • Provide experience with multibody simulation (MBS) using codes such as VAMPIRE or SIMPACK, or define alternatives used.

  • Model Validation and Testing

  • Provide experience using testing equipment such as: a scaled wheel rig (SWR), the full-scale rig (FSR) and The SUROS twin-disc rig for modelling and data collection purposes.

  • Provide availability of access to test equipment.

  • Provide railway vehicle model and software integration experience.

  • Provide experience performing/validating simulations in varying railroad scenarios (i.e., curving, tangent).

  • Provide ability to perform validation testing in relevant environment, (i.e., testing on railroad tracks).


Responses are due no later than March 6th, 2024, 12:00 PM EST. Late submissions will not be accepted or reviewed.  In order to ensure timely response and consideration of your feedback, we ask each company to limit itself to one (1) response.  Please submit all responses to this RFI to the Contracting Officer, Ric Schweitzer at the email below:

DISCLAIMER AND USE OF INFORMATION This RFI does not guarantee that the Government will issue a solicitation or award a contract for supplies or services. No specific solicitation is planned to follow this RFI; however, the responses could impact the Government’s decision to release multiple solicitations in the future.  Proprietary information will be safeguarded in accordance with the applicable government regulations. Any material received will be public domain unless clearly marked (on each page) as proprietary. The Government shall not be liable for or suffer any consequential damages for proprietary information not properly identified.

Please email your questions or comments regarding the RFI to

Respondents are advised that questions, comments, and Government responses may be posted publicly on, although the identity of the requesting organization will be withheld.

Contact Information
Contracting Office Address
  • WASHINGTON , DC 20590
  • USA
Primary Point of Contact
Secondary Point of Contact
  • Feb 21, 2024 08:21 am ESTSources Sought (Original)


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