Komatsu PC118MR-8 Operation And Maintenance Manual page 56

SAFETY LABELS
q TRAVEL WHILE STEERING
Lift the forearm corresponding to the inner steering side
with clenched fist. Rotate the other fist vertically indicating
the wheel's turning direction.
q TRAVEL STRAIGHT AHEAD
Rotate the fists vertically indicating the turning direction of
the wheels.
q DISTANCE TO BE COVERED
With the hands raised and facing inwards, move the hands
laterally indicating the distance to be covered.
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SAFETY