DRIVING ASSISTANCE DEVICE

A processor of a driving assistance device can continue a deceleration assist process in a situation in which a state where a condition for executing the deceleration assist process is satisfied and a condition for executing a collision risk reduction process is not satisfied is maintained, to end execution of the deceleration assist process in a case where a speed of the host vehicle decreases to a threshold value by the deceleration assist process, and to execute a condition relaxation process of relaxing the condition for executing the collision risk reduction process.