TRAVEL CONTROLLER AND METHOD FOR TRAVEL CONTROL

The invention relates to a travel controller (8) comprising a driving control unit (831) that performs driving control of a vehicle (1) at an autonomous driving level that is a first autonomous driving level in which a driver of the vehicle is not obligated to watch or a second autonomous driving level in which the driver is obligated to watch, a notifying unit (832) that notifies, for a predetermined period, the driver of a request for driving the vehicle or taking a driving posture allowing for the driving, when the autonomous driving level of the driving control changes from the first autonomous driving level to the second autonomous driving level, a determining unit (834) that determines an attention level of the driver, based on an output of a sensor (2, 3a, 6) provided for the vehicle, the attention level being a level of attention to driving, anda period modifying unit (835) that modifies the predetermined period so as to be shorter when the determined attention level is high than when the determined attention level is low.