Drowsiness sign notification system, drowsiness sign notification method, and drowsiness sign notification program

A drowsiness sign notification method applied to a vehicle having a driver monitor that detects a driver state being a state of a driver of the vehicle, the drowsiness sign notification method comprising:

• a drowsiness sign determination process that determines whether or not the driver
• shows a drowsiness sign based on the driver state, wherein the drowsiness sign determination process periodically determines a drowsiness level of the driver, assigns drowsiness points based on the determined drowsiness level, and maintains a drowsiness degree based on an integrated value of prior assigned drowsiness points;
• a first drowsiness sign notification process that gives a first drowsiness sign notice to the driver through display or vibration without using audio, when it is determined that the driver shows the drowsiness sign, wherein the driver is determined to show the drowsiness sign if the drowsiness degree exceeds a predetermined maximum value;
• and
• a second drowsiness sign notification process that gives a second drowsiness sign notice to the driver through audio, when it is determined again that the driver shows the drowsiness sign after the first drowsiness sign notification process.

A drowsiness sign notification program applied to a vehicle having a driver monitor that detects a driver state being a state of a driver of the vehicle, the drowsiness sign notification program being configured to, when executed by a computer, cause the computer to execute:

• a drowsiness sign determination process that determines whether or not the driver shows a drowsiness sign based on the driver state, wherein the drowsiness sign determination process periodically determines a drowsiness level of the driver, assigns drowsiness points based on the determined drowsiness level, and maintains a drowsiness degree based on an integrated value of prior assigned drowsiness points;
• a first drowsiness sign notification process that gives a first drowsiness sign notice to the driver through display or vibration without using audio, when it is determined that the driver shows the drowsiness sign, wherein the driver is determined to show the drowsiness sign if the drowsiness degree exceeds a predetermined maximum value;
• and
• a second drowsiness sign notification process that gives a second drowsiness sign notice to the driver through audio, when it is determined again that the driver shows the drowsiness sign after the first drowsiness sign notification process.