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An Analysis of Thermal Track Buckling in the Lateral Plane

The post buckling equilibrium states are determined analytically. To obtain a consisten formulation of the problem, use is made of the principle of virtual displacements and the variation calculus for variable matching points. The obtained formulations are nonlinear, but can be solved exactly....

Longitudinal Forces in Railroad Track

This work is devoted to the theory of design computations for track subjected to thermal and creep forces. The theory of longitudinal forces and displacements arising in continuous welded rail (CWR) track due to temperature changes is mathematically developed. A description of results of...

Bridge Tests by Using the Track Loading Vehicle

The Track Loading Vehicle (TLV) was used to conduct a series of bridge tests. The Big Creek Through Truss Bridge on the Norfolk Southern Railroad in Tennessee was used for thee tests. The theoretical and experimental axial forces in bridge members were compared. The TLC generated influence lines,...

Safety Analysis of the ATCS

There are two reasons to model Advanced Train Control System (ATCS) safety. The first is to provide a general sense of how well the ATCS performs, from the viewpoint of safety, with respect to the current signaling and control systems. The second is to examine the relative contribution to the...

Positive Train Control for Heavy Haul Operations

Positive Train Control offers many safety and operational features that are designed to significantly enhance system reliability and network efficiency for heavy haul rail operations. PTC is intended to provide incremental improvements in train control through a modular design. A manual block...

Railroad Safety Statistics Annual Report 1999

The Federal Railroad Administration's Railroad Safety Statistics Annual Report is intended as a resource for the FRA's safety partners. It is also intended as a general reference source for individuals and organizations with an interest in rail safety issues. Statistical data, tables, and chars are...