The commonly used state‐space models for the traffic description of urban underground railway lines are not suitable for practical on‐line control. On the other hand, the proposed orginal linear formulation is very convenient for optimal state feedback control implementation. Results of simulations relative to a theoretical line as well as to the Brussels Railway lines show the benefit to be expected using this new formulation for on‐line traffic control.
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Campion et al. (1985) studied this question.