Research Article
Nov 1975
Progress in Signaling for Track Guided Systems
Publication: Transportation Engineering Journal of ASCE
Volume 101, Issue 4
Abstract
The advantages of tracked systems over nontracked systems, e.g. the case of automation, are presented. Vehicle detection and communication are critical in automatic systems because of the safety, reliability, and cost factors. Current methods of tracked vehicle detection and communication are reviewed: fixed and moving block systems, the use of crossover wires and the choice of signaling frequencies. The advantages of using high frequencies and surface electromagnetic waves are given and current high frequency methods under investigation are reviewed. Because of the high cost of installing waveguides alongside the track, an innovative method is proposed in which the track is used as a surface waveguide. A block diagram of a headway control and collision avoidance system is illustrated. The results are presented for the analysis of a rail adapted to form a waveguide and these indicate the feasibility of this idea.
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Published In
Transportation Engineering Journal of ASCE
Volume 101 • Issue 4 • November 1975
Pages: 621 - 637
Copyright
© 1975 American Society of Civil Engineers.
History
Published in print: Nov 1975
Published online: Feb 5, 2021
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Authors
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Alastair D. McAulay
Sr. Specialist Engr., Boeing Aerospace Co., Seattle, Wash.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.