This traffic simulator is provided with a simulator engine unit for performing computation on the basis of a formula representing a movement model for a vehicle, a traffic volume calculation unit for calculating a generated traffic volume and a removed traffic volume on the basis of a given OD traffic volume, an estimated congestion length calculation unit for calculating (estimating) an estimated congestion length for each link on the basis of the calculated traffic volume thereof, an origin and destination generation unit for generating an origin traffic volume and an destination traffic volume to adjust the estimated congestion length on the basis of the difference between the estimated congestion length and the measured congestion length, a storage unit for storing predetermined information, and an evaluation condition setting unit for setting evaluation conditions for evaluating the traffic various quantities metrics.