Dar Hız Kesici Tümsek ve Geniş Hız Kesici Tümsek Geçişlerinde Maruz Kalınan Titreşim Seviyeleri

Abstract

The method used to eliminate the adverse effects of excessive vehicle speed in traffic operation is speed management. In the study, speed control undulations (SCUs), as one of the crucial tools of speed management in urban areas, have been evaluated in terms of their discomfort to the drivers and passengers in the passes over. In the evaluations, two narrow-type SCU (Bump) and two wide-type SCU (Hump) with 5 cm and 10 cm height were investigated. Whole-body vibration (WBV) values of the drivers were recorded by passing over the SCUs with passenger car type vehicles at the speeds of 20, 30, 40 and 50 km/h, and the discomfort levels were evaluated according to ISO 2631-1 standard. Vibration data were evaluated using the aw parameter, which is considered to reflect the average effect of the vibration exposed, and the MTVV parameter, which is considered to be able to display instantaneous shock values with higher accuracy. The results were interpreted with the help of graphics, taking into account the comfort thresholds recommended by the standard. Contribution to the literature has been made on this subject, where there is only a limited number of studies.