Abstract: The invention provides systems and methods to determine cannabis impairment using gyroscopes to sense impaired movement of a suspect. The system includes a triaxial gyroscope assembly that transmits wireless signals indicative of the movement to a computing device configured to receive and store the signals and compute and display cannabis impairment of the suspect based on the signals. The method identifies cannabis impairment, including attaching a triaxial gyroscope assembly to a suspect, computing signals indicative of the movement, transmitting the signals to a computing device, and displaying an indicator of cannabis impairment on the computing device.