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This SAE Recommended Practice establishes the location of both driver and passenger heads inside a vehicle for the purpose of describing spatial requirements. Driver lateral head position includes head movement looking to the left and right while driving. Elliptical (head position contour) models in both two and three dimensions are used to represent 95th and 99th percentiles of driver and passenger head locations. This document describes two different procedures for locating driver head position contours, depending on whether or not the driver workspace is like that found in a passenger car or a heavy truck. The need for two different procedures has led to a vehicle classification scheme which labels vehicles as either Class A (passenger cars) or Class B (heavy trucks) according to definitions given in SAE J1100 APR97.

This SAE Recommended Practice describes two dimensional side and rear view 95th and 99th percentile driver and passenger seated head position contours for fixed and horizontally adjustable seats. New information obtained from the SAE Truck Driver Anthropometric and Workspace Study has resulted in development of new head location procedures for trucks and other vehicles with high H-point heights and large steering wheel diameters. Therefore, this practice has been separated into two parts. Part I describes the head location procedure for vehicles with H-point heights (H30) and steering wheel diameters (W9) less than 405 mm and 450 mm, respectively (Class A Vehicles). This class of vehicles includes passenger cars, vans and light trucks. Part II describes a separate head locating procedure for vehicles with H-point heights (H30) between 405 and 530 mm and steering wheel diameters (W9) between 450 and 560 mm (Class B Vehicles).

This SAE Recommended Practice describes two dimensional side and rear view 95th and 99th percentile driver and passenger seated head position contours for fixed and horizontally adjustable seats. New information obtained from the SAE Truck Driver Anthropometric and Workspace Study has resulted in development of new head location procedures for trucks and other vehicles with high H-point heights and large steering wheel diameters. Therefore, this practice has been separated into two parts. Part I describes the head location procedure for vehicles with H-point heights (H30) and steering wheel diameters (W9) less than 405 mm and 450 mm, respectively (Class A Vehicles). This class of vehicles includes passenger cars, vans and light trucks. Part II describes a separate head locating procedure for vehicles with H-point heights (H30) between 405 and 530 mm and steering wheel diameters (W9) between 450 and 560 mm (Class B Vehicles).

This SAE Recommended Practice describes two dimensional side and rear view 95th and 99th percentile driver and passenger seated head position contours for fixed and horizontally adjustable seats. New information obtained from the SAE Truck Driver Anthropometric and Workspace Study has resulted in development of new head location procedures for trucks and other vehicles with high H-point heights and large steering wheel diameters. Therefore, this practice has been separated into two parts. Part I describes the head location procedure for vehicles with H-point heights (H30) and steering wheel diameters (W9) less than 405 mm and 450 mm, respectively (Class A Vehicles). This class of vehicles includes passenger cars, vans and light trucks. Part II describes a separate head locating procedure for vehicles with H-point heights (H30) between 405 and 530 mm and steering wheel diameters (W9) between 450 and 560 mm (Class B Vehicles).

This recommended practice describes boundaries of hand control locations that can be reached by a percentage of different US driver populations in passenger cars, multi-purpose passenger vehicles, and light trucks (Class A vehicles). This practice is not applicable to heavy trucks (Class B vehicles).

This recommended practice describes boundaries of hand control locations that can be reached by a percentage of different US driver populations in passenger cars, multi-purpose passenger vehicles, and light trucks (Class A vehicles). This practice is not applicable to heavy trucks (Class B vehicles).

This recommended practice describes boundaries of hand control locations that can be reached by a percentage of different driver populations in passenger cars, multi-purpose passenger vehicles, and light trucks (Class A vehicles). This practice is not applicable to heavy trucks (Class B vehicles).

This SAE Recommended Practice defines a set of measurements and standard procedures for motor vehicle dimensions. The dimensions are primarily intended to measure the design intent of a vehicle within a design environment (i.e., CAD). All dimensions in this practice can be measured this way. In addition, some dimensions can be taken in an actual vehicle. If measurements are taken on physical properties, some differences in values should be expected. Also, care should be taken to not confuse design intent measurements with those taken on a physical property. It is intended that the dimensions and procedures described in this practice be generic in their application to both the HPM, described in SAE J826, and the HPM-II, described in SAE J4002. In some circumstances, the figures may only reflect one or the other.

This SAE Recommended Practice defines a set of measurements and standard procedures for motor vehicle dimensions. The dimensions are primarily intended to measure the design intent of a vehicle within a design environment (i.e., CAD). All dimensions in this practice can be measured this way. In addition, some dimensions can be taken in an actual vehicle. If measurements are taken on physical properties, some differences in values should be expected. Also, care should be taken to not confuse design intent measurements with those taken on a physical property. It is intended that the dimensions and procedures described in this practice be generic in their application to both the HPM, described in SAE J826, and the HPM-II, described in SAE J4002. In some circumstances, the figures may only reflect one or the other.

This SAE Recommended Practice defines a uniform set of interior and exterior dimensions for passenger cars, multipurpose passenger vehicles, and trucks.