title: Assessment of whole-body vibration exposures and influencing factors for quarry haul truck drivers and loader operators.
abstract: To further assess vibration exposure on haul trucks (HTs) and front-end wheel loaders (FELs), follow-up investigations were conducted at two US crushed stone operations. The purpose was to: 1) evaluate factors such as load/no-load conditions, speed, load capacity, vehicle age, and seat transmissibility relative to vibration exposure; 2) compare exposure levels with existing ISO/ANSI and EUGPG guidelines. Increasing HT speed increased recorded vibration at the chassis and seat as expected. Neither vehicle load nor vehicle speed increased transmissibility. Increasing HT size and age did show transmissibility decreasing. HT dominant-axis wRMS levels (most often they-axis, lateral or side-to-side direction) were predominantly within the health guidance caution zone (HGCZ). However, several instances showed vibration dose value (VDV) above the exposure limit value (ELV) for the ISO/ANSI guidelines. VDV levels (all dominantx-axis or fore-aft) were within and above the HGCZ for the EUGPG and above the HGCZ for ISO/ANSI guidelines.
authors.affiliation: Office of Mine Safety and Health Research, National Institute for Occupational Safety and Health, Centers for Disease Control, P.O. Box 18070, 626, Cochrans Mill Road, Pittsburgh, PA 15236, USA.
authors.forename: Alan G
authors.initials: AG
authors.lastname: Mayton
authors.affiliation: Office of Mine Safety and Health Research, National Institute for Occupational Safety and Health, Centers for Disease Control, P.O. Box 18070, 626, Cochrans Mill Road, Pittsburgh, PA 15236, USA.
authors.forename: Christopher C
authors.initials: CC
authors.lastname: Jobes
authors.affiliation: Department of Industrial and Systems Engineering, Auburn University, 3304 Shelby Center, AL 36849-5346, USA szg0036@auburn.edu.
authors.forename: Sean
authors.initials: S
authors.lastname: Gallagher
keywords: HGCZ; WBV guidelines/standards; haul truck drivers; health guidance caution zone; heavy vehicle systems; loader operators; whole-body vibration exposures