A system for assisting vehicle driving includes a processor executing a process of assisting vehicle driving; and a memory. The process includes communicating with vehicles to obtain the travel information, storing the travel information in the memory; estimating a target stop position where the vehicle should stop based on the travel information; transmitting the target stop position to the vehicles-obtaining an index indicating at least one of repeatability of driving behavior of a driver, proximity of the behavior to an average value of others, and fuel consumption, determining a first driver corresponding to the index indicating a value less than a value determined based on the travel information of others; and eliminating a stop position information form the travel information stored in the memory, the stop position information indicating a stop position based on the travel information of the vehicle driven by the first driver.