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This paper aims to disclose the cause of amplification of surface vibration induced by train operation in rapid transit system. The surface vibration was measured on site, and a 2D finite-element model was established to see if the surface building affects the vibration propagation. Based on this model, discussed the impacts of the location and number of buildings on the propagation process. And concluded that the building foundation has an amplification effect on the suiface vibration, the effect is more obvious horizontally than vertically; the vibration amplification mainly happens in the low-frequency band; the building foundation has a limited scope of impact on surface vibration, and the vertical scope is greater than the horizontal scope; on an open field, the surface vibration is smaller than the foundation vibration; at the position of the building it is opposite. The research findings lay a solid basis for the prediction of subway-induced vibration, and provide insights into the design of vibration control measures. [ABSTRACT FROM AUTHOR]

Collective transport transit user judge and perceive the quality of the service using few parameters. First, "frequency", on which depends waiting time and consequently time for transport (travel time). In the making of the service, is evaluated the number of vehicles to satisfy the demand of transport and a timeline is scheduled for departures from the terminal in order to have the same distances between them. It's unfortunately well known that during the service distances quite never remains stable. In this paper we study the reasons why this happen, but at the same time we suggest an effective strategy to solve this situation and fix back a regular service. A fundamental conclusion of this study is the understanding of the importance to have vehicles' and employees' reserves, an aspect that is often underestimated in a Local Public Transport project and simply solved with the creation of a surplus of service respect the real demand of transport. [ABSTRACT FROM AUTHOR]