2 DEFINITIONS
Throughout this protocol the following terms are used:
Peak Braking Coefficient (PBC) – the measure of tyre to road surface friction based
on the maximum deceleration of a rolling tyre, measured using the American Society
for Testing and Materials (ASTM) E1136-10 (2010) standard reference test tyre, in
accordance with ASTM Method E 1337-90 (reapproved 1996), at a speed of 64.4km/h,
without water delivery.
Autonomous Emergency Braking (AEB) – braking that is applied automatically by
the vehicle in response to the detection of a likely collision to reduce the vehicle speed
and potentially avoid the collision.
Forward Collision Warning (FCW) – an audiovisual warning that is provided
automatically by the vehicle in response to the detection of a likely collision to alert
the driver.
Vehicle width – the widest point of the vehicle ignoring the rear-view mirrors, side
marker lamps, tyre pressure indicators, direction indicator lamps, position lamps,
flexible mud-guards and the deflected part of the tyre side-walls immediately above the
point of contact with the ground.
Car-to-Pedestrian Farside Adult 50% (CPFA-50) – a collision in which a vehicle
travels forwards towards an adult pedestrian crossing its path running from the farside
and the frontal structure of the vehicle strikes the pedestrian at 50% of the vehicle's
width when no braking action is applied.
Car-to-Pedestrian Nearside Adult 25% (CPNA-25) – a collision in which a vehicle
travels forwards towards an adult pedestrian crossing its path walking from the nearside
and the frontal structure of the vehicle strikes the pedestrian at 25% of the vehicle’s
width when no braking action is applied.
Car-to-Pedestrian Nearside Adult 75% (CPNA-75) – a collision in which a vehicle
travels forwards towards an adult pedestrian crossing its path walking from the nearside
and the frontal structure of the vehicle strikes the pedestrian at 75% of the vehicle’s
width when no braking action is applied.
Car-to-Pedestrian Nearside Child 50% (CPNC-50) – a collision in which a vehicle
travels forwards towards a child pedestrian crossing its path running from behind and
obstruction from the nearside and the frontal structure of the vehicle strikes the
pedestrian at 50% of the vehicle's width when no braking action is applied.
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