Specifications

MILSTD-1472E
d. a safety “shut-down” control is required during an operation in which the operator’s
hands cannot be freed to reach a safety switch.
5.4.1,8.6.2 Avoidance. Foot operated controls should not be used when:
a. a standing operator is confronted with a sensitive balancing requirement (e.g., a moving
platform where balancing on the non-operating foot may become difficult as the operating foot
is moved from a support to actuating position),
b. precise control operations are required, or
c. selection from among a great many separate controls is required.
5.4.1 .8.6,3 @ration. Foot controls shall be located
and designed so they can be operated in as
natural a pattern as practicable and should not require the operator to:
a. perform frequent, maximum reaching,
b. hold the leg or foot in awkward position for extended periods of time,
c. operate a control fi-equentlyor for an extended period of time while sitting in a twisted
position (i.e., pedals shall be laid out symmetrically with reference to the operator’s principal
operating orientation),
d. apply maximum fome frequently or for extended durations,
e. search for a particular foot control in order to select the proper one, or
f, use a foot control located where(1) it might be stepped on and inadvertently actuated, or (2)
shifting the foot from one control to another creates conditions where the foot or clothing
might be entrapped by an intervening control.
5.4.1 .8.6.4 b&uratJ
“onand xkcement. Configuration and placement of foot operated
controls shall accommodate the anthropornetry of the operator’s foot wearing operational shoes or
boots, Each foot operated control shall be located so that (a) actuating it by one foot does not interfere
with actuating a control by the other foot and (b) foot and leg movements are natural and easily
accomplished within the work station where the foot controls are located.
5.4.1.9 Hazardous ouera
tions.
5.4.1.9. i Mdooks and ahrrns. Where pmct.icd, the critical position of a control that initiates
hazardous operations (e.g., ignition, crane movement) shall activate visible and audible warning
signals in the afftzed work area.
5.4.1 .9,2 Consistency of use. A control used for a critical/emergency use func(ion shall be
thx.iiciilexito that function only.
5,4.2 Rotary controls
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~ 4 ? I I)iwmrr adjllstrncnlrotarvcontrols
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