Abstract: Methods and apparatus to identify, classify, and edit artificial spikes in cruise guide indicator (CGI) signal data are disclosed. An example apparatus includes memory, machine-readable instructions, and processor circuitry. The processor circuitry is to execute the machine-readable instructions to identify a spike in the CGI signal data. The processor circuitry is to execute the machine-readable instructions to determine whether the spike is an artificial spike. In response to determining that the spike is an artificial spike, the processor circuitry is to execute the machine-readable instructions to replace a portion of the CGI signal data including the artificial spike and a transient response of the artificial spike with edited CGI signal data.