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52550
  
  

  21
Nov
2018
Research Results
Report on the New Rail Integrity and Performance Testing at the Mega Sites
Author
          Federal Railroad Administration

Subject
                    Heavy Axle Load (HAL)

**Keywords:** Rail, rolling contact fatigue, RCF, wear, friction control, grinding
**Abstract:** Since 2005, the Association of American Railroads (AAR) and the Federal Railroad Administration (FRA) have co-sponsored ongoing rail performance testing under mainline heavy...
Report Number
              RR 18-17

  Office
              RDI-21
    6
Jun
2018
Research Results
Ballast Degradation Under Heavy Axle Load Trains at the Western Mega Site
Author
          Federal Railroad Administration

Subject
                    Heavy Axle Load (HAL)

**Keywords:** Ballast degradation, triaxial testing, ballast box, heavy axle load, HAL
**Abstract:** Transportation Technology Center, Inc. (TTCI) and the University of Illinois Urbana-Champaign (UIUC), in conjunction with Union Pacific Railroad (UP), investigated ballast...
Report Number
              RR 18-09

  Office
              RDI-21
    27
Feb
2018
Research Results
Performance of No. 20 Frogs of Various Designs in Revenue Service
Author
          Federal Railroad Administration

Subject
                    Heavy Axle Load (HAL),
                    Track

**Keywords:** Special trackwork, turnout frogs, frog heel, frog point, HAL
**Abstract:** Transportation Technology Center, Inc. (TTCI) tested and evaluated the performance of four No. 20 fixed-point frogs on the Norfolk Southern Railway (NS) track as part of the...
Report Number
              RR 18-04

  Office
              RDI-21
    8
Dec
2017
Accident Investigations
HQ-2017-1237 (Finalized)

Subject
                    Accident Investigations,
                    Freight Operations,
                    Hazardous Materials

**Keywords:** Accident Investigations, CSX, Hazardous Materials
**Abstract:** On December 8, 2017, at 2:08 p.m., EST, eastbound CSX Transportation (CSX) mixed freight Train Q40407, consisting of 3 locomotives and 141 cars (66 loads/75 empties), derailed 31...
Accident Date
              December 8, 2017

  Accident Type
              Derailment (DRM)

  Railroad Name
              CSX Transportation

  Location
              Union, NJUnited States

  Accident Number
              HQ-2017-1237

  Investigation Status
              Finalized
    29
Nov
2017
Technical Reports
Improved Concrete Crosstie and Fastening Systems for US High Speed Passenger Rail and Joint Corridors: Volume 1 – Project Summary Report
Author
          Federal Railroad Administration

Subject
                    Freight Operations,
                    Passenger Rail

**Keywords:** Concrete crossties, fastening systems, flexural behavior, mechanistic design, infrastructure components, finite element modeling, field experimentation
**Abstract:** Rail corridors often experience a wide variety of passenger and freight train loads, track geometry characteristics, and environmental conditions. These factors must be considered...
Report Number
              DOT/FRA/ORD-17/23

  Office
              RDI-21

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