Abstract: The influence of the transverse unevenness indexes of the road profile on the vehicle vibration was rarely studied in the past. This study proposes new road indexes of the transverse road profile and their correlation with ...

Abstract: This study identified longitudinal road roughness limit values based on measured vibration induced in a road-vehicle-driver interaction system. The relations between measured vehicle vibration response and the international ...

Abstract: This study presents the regression relationships between two commonly used indicators of longitudinal road unevenness, the international roughness index (IRI) and the straightedge index. A total of 290 real longitudinal ...

Abstract: The presented study compares three alternative straight-line approximations of the longitudinal road-profile power spectral density (PSD). The one straight line and two and three split straight-line approximations were ...

Abstract: This paper estimates the correlations among nine vertical vibration responses on two vehicle planar models (passenger car and heavy truck) and 27 different road unevenness indicators (RUI) of longitudinal road profile. The ...

Abstract: This paper addressed an important question of selection of wheel path(s) for International Roughness Index (IRI) or Mean Roughness Index (MRI) estimation. Twenty-one IRI/MRI alternatives of wheel path position(s) (single ...

Abstract: This study analyzed measured vibration dose value (VDV) in passenger cars as a function of longitudinal road roughness. The VDV was estimated on the passenger seat based on acceleration measured in three orthogonal axes ...

Abstract: This study quantifies and explains the paradox of a slow increase in road quality over time with a concomitant decrease in ride comfort or objective road quality. The study estimates the effect of road profile wavelength ...

Abstract: Remixing of the wearing course in the high-speed lane of a freeway resulted in a new road surface that, compared with the old surface in the adjacent low-speed lane, was perceived as a bumpy ride by road users, as well as ...

Abstract: The paper presents a method for estimation of power spectral density (PSD) parameters (unevenness index and waviness) of a longitudinal road profile in the short wavelength band from data collected by straightedge (SE) ...