Whiplash Testing Protocol - Euro NCAP

Version 3.1
June 2011
Alternatively, a CMM may be used. With the seat in the rearmost position, mark a hard point
on the seat and record its location. Move the seat to its most forward adjustment position and
record the position of the seat hard point.
Move the seat rearward until the mark on the seat support structure aligns with centre seat
track mark, or until the marked hard point is midway between the two previously recorded
hard point locations. The final position will depend on whether the seat track adjusts
continuously or incrementally.
The seat should be checked to ensure that both seat runners are set and locked correctly. In
some cases there may be different amounts of travel between the two seat runners, care
should be taken to ensure that in such cases both seat runners are locked in the correct
positions.
4.6.2.3.1 Continuously adjusting seat track. The seat mark should align (± 2mm) with the
mid-track mark. Alternatively, the hard point should have an X-coordinate that is midway
(± 2mm) between the X-coordinates of the forward most and rearward most adjustment
positions.
4.6.2.3.2 Incrementally adjusting seat track. If the midrange adjustment does not correspond to
an incremental adjustment position (± 2mm), then the seat should be set to the first
incremental position rearward of the calculated midrange position.
4.6.2.4 Setting seat height adjustment to midrange. Mark two hard points on the side of the seat,
which are attached to and move with the cushion frame, one near the front of the cushion and
one near the rear. Record the locations of both points with a CMM or measure the vertical
heights of the points relative to a fixed reference with a measuring tape. Use the seat height
adjuster control(s) to move the seat to its highest position. If the front and rear of the seat
adjust separately, then make sure that both the front and rear of the seat are raised to their
highest positions. Record the locations of the two hard points with the CMM or measure the
vertical heights of the points relative to a fixed reference with a measuring tape. Then lower
the seat until both hard points are midway between their highest and lowest positions. The
final position will depend on type of seat height adjuster.
4.6.2.4.1 Single control seat height. If the height is controlled by a single adjuster, its final
position will depend on whether it is continuously or incrementally adjusting.
4.6.2.4.1.1 Continuously adjusting seat height. For single control height adjusters, the rear hard
point should be ± 2mm of the calculated midpoint.
4.6.2.4.1.2 Incrementally adjusting seat height. If the midrange adjustment does not correspond to
an indexed adjustment position (± 2mm), then the seat should be set to the first indexed
position below the calculated midrange position.
4.6.2.4.2 Dual control seat height. If the front and rear of the seat adjust separately, then use the
front adjuster to lower the front hard point and the rear adjuster to lower the rear hard
point. The final position will depend on whether it is continuously or incrementally
adjusting. Note that the adjustment of the front and rear controls may need to be iterated
in order to achieve the calculated midpoints.
10