Driving assist system

A driving assist system that assists driving of a vehicle, the driving assist system comprising:

• a processor;
• and
• a memory that stores driving environment information indicating a driving environment for the vehicle, wherein
• a deceleration target includes at least one of a preceding vehicle, a mandatory stop line, a mandatory stop sign, a traffic signal, and a stop line before the traffic signal, each of which exists ahead of the vehicle,
• a risk factor includes at least one of a pedestrian, a bicycle, a motorcycle, an oncoming vehicle, and a parked vehicle, each of which exists ahead of the vehicle,
• the processor is configured to execute:
• deceleration assist control that automatically decelerates the vehicle before the deceleration target based on the driving environment information;
• risk avoidance control that automatically performs at least one of steering and deceleration of the vehicle so as to avoid the risk factor based on the driving environment information;
• and
• a notification process that notifies a driver of the vehicle of the deceleration target or the risk factor, and
• the notification process includes a first notification process that notifies the driver of not the deceleration target but the risk factor in a first period, and
• the first period includes a period in which both the deceleration assist control and the risk avoidance control operate concurrently and a degree of urgency of the deceleration assist control is less than a threshold.