An information processing apparatus comprising: an acquiring unit that acquires accident information representing an accident on a transport line in a transport network including a plurality of transport lines, the accident occurring during operation of the vehicles and said accident being any situation in which the vehicles are not operated according to a predetermined schedule; a first specifying unit that specifies a terminal location and a moving direction, the terminal location showing a location of a communication terminal that notifies information to a passenger on one of the vehicles running on one of the transport lines, the moving direction being a direction of the communication terminal on the transport line; a determination unit that determines an influence of the accident represented by the accident information acquired by the acquiring unit, to the passenger who is moving from the terminal location specified by the first specifying unit in the moving direction; and a transmission unit that transmits accident information acquired by the acquiring unit and, associated with the accident information, impact information that represents the influence determined by the determination unit for that accident information to the communication terminal, wherein the vehicle is a train including a plurality of cars, characterized in that the information processing apparatus further comprises: a first storage unit that stores, for each stop where more than two transport lines are passing, in association, a first transport line that is passing the stop, a second transport line that can be transferred to from the first transport line at the stop, and a first car position, which is a position of the car that requires the shortest transfer time in a train on the first transport line that stops at that stop; and a second specifying unit that specifies a second car position, which is a position of the car in which the communication terminal resides in a train that stops at the stop, wherein the determination unit determines that the influence of an accident that has occurred on the second transport line, which is stored in the first storage unit associated with the first transport line and the first car position, is larger on the passenger in a car that is in the second car position, if the difference between the second car position specified by the second specifying unit on a train running on the first transport line and the first car position stored in the first storage unit associated with the first transport line is in a predetermined range, than in the case where the difference is not in the range. an acquiring unit that acquires accident information representing an accident on a transport line in a transport network including a plurality of transport lines, the accident occurring during operation of the vehicles and said accident being any situation in which the vehicles are not operated according to a predetermined schedule; a first specifying unit that specifies a terminal location and a moving direction, the terminal location showing a location of a communication terminal that notifies information to a passenger on one of the vehicles running on one of the transport lines, the moving direction being a direction of the communication terminal on the transport line; a determination unit that determines an influence of the accident represented by the accident information acquired by the acquiring unit, to the passenger who is moving from the terminal location specified by the first specifying unit in the moving direction; and a transmission unit that transmits accident information acquired by the acquiring unit and, associated with the accident information, impact information that represents the influence determined by the determination unit for that accident information to the communication terminal, a first storage unit that stores, for each stop where more than two transport lines are passing, in association, a first transport line that is passing the stop, a second transport line that can be transferred to from the first transport line at the stop, and a first car position, which is a position of the car that requires the shortest transfer time in a train on the first transport line that stops at that stop; and a second specifying unit that specifies a second car position, which is a position of the car in which the communication terminal resides in a train that stops at the stop,