Automatic turn-sensing ground speed reduction systems and related methods for walk-behind, self-propelled machines are disclosed. In one aspect, automatic turn-sensing ground speed reduction systems and related methods can include a control unit and a sensor. The sensor can be configured to transmit a signal to the control unit. In some aspects, the sensor can include a gyroscope that can be configured to transmit the signal to the control unit, the signal corresponding to an angular velocity of the walk-behind machine measured about a vertical axis perpendicular to a ground surface on which the walk-behind machine can be self-propelled. The control unit can be configured to automatically adjust a ground speed of the walk-behind machine during turning movement of the walk-behind machine based upon the signal.
