In law enforcement, what does 'x90I' stand for?

The correct interpretation of 'x90I' in law enforcement is that it signifies 'Immediate assistance.' This code is part of a system of ten-codes or ten signals used by law enforcement agencies to communicate efficiently over radios. 'x90I' specifically indicates that an officer requires immediate help, which is critical during situations where an officer may be in danger or needs urgent support. Understanding these codes can enhance overall communication effectiveness and rapid response in law enforcement operations.