I type it as what is printed on my textbook.
Many police departments have not developed formal, written, standards directing officers on how to use this discretion.
What is an under-inflated tire?
In the traffic-stop context, these stops include checks for under-inflated tires, safety belt warnings, failures to signal lane changes, and other minor vehicle code and nonmoving violations.
1) The sentence is not written well, but it the second comma is OK. It means neither:formal nor written standards have been developed. If the second comma is removed, it means something different - formal and written standards.
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exodejavuI think the second comma is a typo ... and that the first comma also seem unnecessary..not sure..I, too, think the second comma is a typo. But it could be that the writer is thinking that all formal standards are written standards and the word written is therefore parenthetical, as if to say: