Analysis of vibration levels in users of urban trains
Urban trains and subways are a Brazilian reality. One major aspect that is delegated to a second plan, concerns the quality transportation referred to availability, capacity and safety. Lately, vibration and noise produced by this means of transport have been affecting the life quality in neighborhoods as well as their users. In this paper, the whole body vibration levels in urban trains in Porto Alegre (Trensurb) are evaluated in some situations. Regarding the vibration and rms acceleration doses, the measured values were very low for the back, seat and floor in the vehicle which resulted below the action limit 0.5 m/s² thus, far from the exposure limit 1.1 m/s2 for an 8h exposure time. Generally speaking, the measured vibration levels are considered comfortable, according to values defined in standards, however in some positions and situation, they can be considered uncomfortable.
Keywords: Whole Body Vibration (WBV), Trains, Subways, ISO 2631.
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