Assessing the affects of heavy-axle-load traffic on track components; update of experiments at revenue service mega sites

摘要

Established in 2004, two revenue service mega sites have provided testing environments that supplement and complement the Facility for Accelerated Service Testing for the Heavy-Axle-Load Research Program, in terms of train operations, track and subgrade, as well as climate conditions.rnTransportation Technology Center, Inc., in cooperation with Norfolk Southern and Union Pacific, has conducted a variety of experiments to assess the effects of HAL traffic on track component performance, particularly those new and alternative components intended to improve train operation safety and efficiency.