Description / Abstract:
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.
Unless otherwise specified, all dimensions are measured normal
to the three-dimensional reference system (see SAE J182), except
ground-related dimensions, which are defined normal to ground. All
dimensions are taken with the vehicle at curb weight unless
otherwise specified.
All dimensions are measured on the base vehicle and do not
include Regular Production Options (RPO) or accessory parts, unless
otherwise specified.
Although many terms and dimensions use human body parts
in their name, they should not be construed as measures that
indicate occupant accommodation, capabilities, or
comfort.