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P.J. Cross

Technical Director Westinghouse Signals Limited

In my opinion it's all about finding out where the trains are (or to be pedantic but more precise, where they aren't!). The paper is a personal view based on a few (!) years of experience in the field. It is not intended that it should be a replacement for excellent treatises on the subject (such as refs. 1, 2 & 3). I have attempted to provide a historical view of train detection and its role in the signalling system and then explore the latest technology and how the new demands for train detection are being met. No apology is made for the fact that the paper is heavily biased towards track circuits as they have dominated the train detection market.