An information processing method, comprising: a step of acquiring movement information on a first mobile body including information on a first position (A 1) through which the first mobile body is scheduled to pass in a first time slot and information on a travel direction of the first mobile body; a step of setting, as an exclusive area in the first time slot, an area between the first position (A 1) and a second position (A 4) on a travel direction side of the first mobile body from the first position (A 1) based on the movement information on the first mobile body; and a step of acquiring information on a first route on which the first mobile body is scheduled to move and a second route on which the second mobile body is scheduled to move, wherein the exclusive area is set in a manner that a second mobile body other than the first mobile body is not permitted to move within the exclusive area in a travel direction different from the travel direction of the first mobile body in the first time slot and that the second mobile body is permitted to move within the exclusive area in a travel direction identical to the travel direction of the first mobile body in the first time slot, and in the step of setting, in a case where, on a route on the travel direction side, the second position (A 4) is positioned between a first branch position, being said first position, at which the route on the travel direction side is branched to another route and a second branch position at which the route on the travel direction side is branched to another route next to the first branch position, an area from the first position (A 1) to the second branch position is set as the exclusive area. a step of acquiring movement information on a first mobile body including information on a first position (A 1) through which the first mobile body is scheduled to pass in a first time slot and information on a travel direction of the first mobile body; a step of setting, as an exclusive area in the first time slot, an area between the first position (A 1) and a second position (A 4) on a travel direction side of the first mobile body from the first position (A 1) based on the movement information on the first mobile body; and a step of acquiring information on a first route on which the first mobile body is scheduled to move and a second route on which the second mobile body is scheduled to move, wherein the exclusive area is set in a manner that a second mobile body other than the first mobile body is not permitted to move within the exclusive area in a travel direction different from the travel direction of the first mobile body in the first time slot and that the second mobile body is permitted to move within the exclusive area in a travel direction identical to the travel direction of the first mobile body in the first time slot, and in the step of setting, in a case where, on a route on the travel direction side, the second position (A 4) is positioned between a first branch position, being said first position, at which the route on the travel direction side is branched to another route and a second branch position at which the route on the travel direction side is branched to another route next to the first branch position, an area from the first position (A 1) to the second branch position is set as the exclusive area.