Re: Ticket for Impeading Traffic Given Without Law Enforcement Seeing Alleged Violati
Quoting PTPD22
An officer can take someone into custody for an offence that occurred in ANOTHER officer's presence, but both officers would then need to testify if needed.
That's the "Collective knowledge doctrine" or the "Fellow officer" rule.
Also, issuing a Citation is NOT an arrest as the OP was not arrested, just cited.