The OBS = Omni Bearing Selector
It means that the code the officer used to enter the charge was OBSolete. The charge is still in affect, but the officer just put in the wrong code. The *OBS* is supposed to deter anyone from using it, but as often as I see *OBS* on clients' records, I don't think it does. Hope this answer does, though.
To "observe" or visualize.
'obs.' when used in defining terms in a dictionary stands for 'obsolete', and indicates a lesser known or rarely utilized meaning for the term.
Obs Heximer died in 1988.
Obs Heximer was born in 1910.
OBS Logistics was created in 1989.
OBS - South Korean broadcaster - was created in 1990.
A residential smoke alarm must be at least 75 dBA, or 15 dBA above average ambient sound (whichever is greater), measured at pillow location, meaning that it may be much louder at the source. In a "high ambient noise area" it must be 110 dBA.
OBS Studio, Wirecast, Streamlabs OBS, XSplit, VidBlasterX. Google any of them.
Dil"i*gen*cy\, n. [L. diligentia.] Diligence; care; persevering endeavor. [Obs.] --Milton.
Are you sure that the first letter is an "O" and not possibly a "P?" If it were a "P" it could stand for: Pocketbook Snatch Robbery. (??)