Originally Posted by
rjque
All the more reason for pilots to be more attentive with the seat belt sign. The sign currently means nothing, since some pilots will leave it on all flight, while others will turn it on with any turbulence and chop, and still others only use it for expected moderate or greater (mostly non-US airlines). Honestly, they should leave the sign off in anything less than moderate (outside of takeoff, landing, taxi, etc.), since light chop at cruise generally doesn't present a problem for most able bodied people. Perhaps then passengers would start to believe that the sign actually means something.
I tend to agree. However, from a "technical" standpoint, "moderate or greater" is too high for a starting threshold, because moderate is pretty bad from a "the drink isn't going to stay in the cup and the food is going to the floor" perspective (as opposed to an aircraft stability/safety perspective).