Are there two types of runway holding position sign? I came across this section on runway holding position marking while reading Jeppesen Airway Manual, which got me very confused.


My question is: Is Pattern B describing another type of runway holding position sign other than the one described in Pattern A? Or is it just describing the ILS critical area boundary marking for CAT II &amp; III approaches? I'm asking this question because I've never heard in my whole aviation career that there are &quot;two&quot; runway holding position markings, nor seen one.
I’ve never seen the critical area hold bars referred to as a type of runway hold bars, but they serve the same general purpose when the critical area needs to be protected, so I can understand the point of describing them together.