Signal 100:

Radio silence – used during emergencies or critical situations.

Code 9:

Requesting permission to leave the scene.

Code 8:

Dangerous goods/hazards present.

Code 5:

The officer needs immediate assistance (officer in distress).

Code 4:

The situation is under control.

Code 3:

No further assistance is required.

Code 2:

Non-urgent – No lights or sirens required.

Code 1:

Urgent – Lights and sirens required.