B757 captain reported confusing language found in a temporary taxi alert.

Narrative:

This is in regard to the operations alert at sfo concerning the use of taxi-lane 'Y'. The text of this operations alert references 'group 3 aircraft'. That is an ATC term. It is not defined anywhere in any of our manuals that I can find. Thus it should not be used in an operations alert or pilot bulletin because it means absolutely nothing to the average line pilot. Instead; this operations alert should have said that taxi-lane 'Y' is restricted to B737 series and A320 series and smaller; or wingspan less than 118 feet. That language actually means something to the average line pilot.

Original NASA ASRS Text

Title: B757 Captain reported confusing language found in a temporary taxi alert.

Narrative: This is in regard to the operations alert at SFO concerning the use of taxi-lane 'Y'. The text of this operations alert references 'group 3 aircraft'. That is an ATC term. It is not defined anywhere in any of our manuals that I can find. Thus it should not be used in an operations alert or pilot bulletin because it means absolutely nothing to the average line pilot. Instead; this operations alert should have said that taxi-lane 'Y' is restricted to B737 series and A320 series and smaller; or wingspan less than 118 feet. That language actually means something to the average line pilot.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1667991
Time
Date	201907
Place
Locale Reference	SFO.Airport
State Reference	CA
Aircraft 1
Make Model Name	B757 Undifferentiated or Other Model
Person 1
Function	Captain
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Deviation - Procedural Published Material / Policy