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High-Strength, Reduced-Modulus, High-Performance Concrete for Prestressed Concrete Crosstie Applications
High-performance concrete (HPC) with early strength development is the material of choice for fabricating prestressed concrete railroad ties. However, the higher strength of HPC results in significantly higher elastic modulus values and increases the rigidity of the tie, leading to higher...
Characterization of Track Geometry for Various Operational Conditions
This report characterizes the amplitude and wavelength content of the current track geometry environment of the United States railroad system and examines the combination of geometric parameters for different operational conditions. The analyzed track geometry dataset consists of over 49,000...
Privacy Policy For the HOS (Hours of Service) Manual Mobile Application
Overview
The Hours of Service (HOS) Manual mobile application is developed by the Department of Transportation (DOT) Federal Railroad Administration (FRA). The primary purpose of the HOS Manual application is to provide clarification on hours of service requirements found at 49 CFR Part 228, Hours of Service Recordkeeping, and FRA hours of service interpretations and policies.
Information Collected
No information about the user or their device is collected by the HOS Manual application.
Uses of Information
No information about the user or their device is collected by the HOS Manual application.
Information Storage and Retention
No information is stored or retained as part of the HOS Manual application.
Use of Third-party API
No third-party API is used by the HOS Manual application.
Information Sharing and Disclosure
No user information is collected or shared by the HOS Manual application.
Application Security
This mobile application does not collect any information about the user or their device. The app was developed using best practices for securely utilizing the Android Software Development Kit (SDK). No API is used, and no third-party services are allowed direct access to the user’s device. The HOS Manual is sandboxed and cannot access other apps or share data between apps installed on the mobile device.
How to Access or Correct your Information
The HOS Manual mobile application does not collect any information about the user or their device. The DOT FRA provides transparency about the collection, utilization, and retention of user data through this Privacy Policy. Users may request more information regarding this Mobile App by contacting the DOT Privacy Office via email privacy@dot.gov..
Analytics Tools
The HOS Manual application does not use any third-party analytics tools.
Privacy Policy Contact Information
Users may contact the FRA Privacy Office by e-mailing privacy@dot.gov.
Torsional Strength and Stiffness of a Passenger Car Coupling System
Between September 2019 and June 2022, the Federal Railroad Administration (FRA) sponsored a research team from Sharma & Associates to model and test the torsional strength of a passenger car coupling system to understand the performance of coupling systems in train accidents and to enhance...