Western Australian Current Regulations Western Australian Current Regulations The air pressure in
each air brake reservoir in a B‑double or road train must recover to at
least 420 kPa within one minute after 3 full brake applications have been made
within a 10 second period if, before the 3 brake applications have
been made —
(a) the
engine is running at maximum speed; and
(b) the
governor cut‑in pressure is no higher than —
(i)
the pressure specified by the vehicle’s
manufacturer; or
(ii)
if there is no manufacturer’s
specification — 550 kPa;
and
(c) the
air pressure in the storage tanks of the vehicle is not under —
(i)
the average of the maximum and minimum pressures in the
operating pressure range specified by the vehicle’s manufacturer; or
(ii)
if there is no manufacturer’s
specification — 650 kPa.