That 'sounds' like the noise I heard an 91-D RH making in the Square in Tallaght one day as it arrived operating a 49 in to attract the attention of the security (who failed to react), an extraordinarily high whine. Very much panic alarm. Also an RV on the 83 made the same noise when the driver spotted an incident outside the bus around the pedestrian lights at the Ha'penny Bridge.

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Edited 2 times by Gael07 24/03/2011 23:59:21.