Patent ID: 9542847
Date: 2017-01-10
CPC Classifications: B60W,G08G

Claim:
1. A method comprising: identifying a driver of a vehicle; storing, in a memory, a profile having a driver identification of the driver and profile data including pupil size baseline data corresponding to a stored pupil size of the driver during a previous driving session, braking baseline data corresponding to stored braking operations of the driver and steering baseline data including an average steering angle of stored steering operations of the driver; detecting, using at least one sensor or camera, impairment indication data during a current driving session of the driver including pupil size data corresponding to a current pupil size of the driver during the current driving session, braking data for the current driving session of the driver, and steering data corresponding to the current driving session of the driver; determining, by a vehicle control unit, that the driver is impaired by comparing the impairment indication data to the profile data including comparing the pupil size data to the pupil size baseline data, the braking data for the current driving session to the braking baseline data corresponding to the stored braking operations and an average steering angle from the steering data of the current driving session to the average steering angle included in the steering baseline data; determining that a deviation between the braking data and the braking baseline data is greater than a first threshold deviation and that a deviation between the average steering angle of the current driving session and the average steering angle included in the steering baseline data is greater than a second threshold deviation; and adjusting, by the vehicle control unit, a lane departure warning/assistance threshold in response to determining that the deviation between the braking data and the braking baseline data is greater than the first threshold deviation and that the deviation between the average steering angle of the current driving session and the average steering angle included in the steering baseline data is greater than the second threshold deviation.