On Mar 21, 11:08*am, Peter Clark
wrote:
Um, since the beginning of 91.175f in it's entirety is "[...]"
where do you see that it's anything other than a weather-minimum? *
(f)1 (f)2 and (f)3 define
standard visibility requirements for takeoff referenced to how many
engines or helicopter, nothing about DP or ODP.

The first sentence of 91.175f (exempting Part 91) occurs prior to f1,
f2, and f3, and scopes over all of those. Please re-read 91.175f3; it
does refer to ODPs.

Part 97 says what the takeoff minimums and ODPs are. But 91.175f says
which flights the Part 97 resrictions do or don't apply to.