Validation of a 70-ton Higher Speed Freight Truck Design: Phase II
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2020-03-01
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Edition:Technical Report February 11, 2013-October 10, 2014
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Abstract:Previously, Phase I of this project demonstrated viable market potential and operating economics for high speed freight service, and established that the higher speed truck (HST) prototype design is capable of meeting the dynamic and structural requirements expected in higher speed freight operations. In Phase II, the design was evaluated through full-scale track testing per the track-worthiness requirements defined in the Association of American Railroads’ (AAR) Manual of Standards and Recommended Practices (MSRP), Section D, Specification M-976 and those proposed in the Federal Railroad Administration’s (FRA) Technical Report published August 2015, “Validation of A 70-Ton Higher Speed Freight Truck Design for Operations of up to 125 Mph—Higher Speed Freight Truck Vehicle Dynamics Analysis.” The results confirm that the design successfully meets all dynamic performance criteria specified including high speed stability (hunting) up to 106.5 mph, which was the maximum achievable speed with the available locomotive.
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