New Holland T4O3O - Manual (Page 7)

POWER SHUTTLE SPEED DIRECTION CHANGE
If a fast shuttle between forward and reverse is a priority,
consider the 16x16 Power Shuttle transmission. The
operator can simply use the electro-hydraulic shuttle lever
to change direction. From neutral, the shuttle lever can be
used to smoothly feed power to the transmission without
using the clutch.
CREEP SPEED OPTION
Creep speeds as low as 160 metres/hour are
available, enabling the tractor to carry out a
wide range of precision operations. These
transmissions are so flexible that this same low
speed can be matched to a ratio offering a 40
kph transport speed.