An industrial vehicle remote control system comprising: an industrial vehicle including a vehicle communication portion; a remote control device that includes a control device communication portion, which communicates wirelessly with the vehicle communication portion, and is used to remotely control the industrial vehicle; an acquisition portion (36, 101) configured to acquire a received radio wave intensity of a signal communicated wirelessly between the vehicle communication portion and the control device communication portion; characterized by further comprising: a possibility determination portion (36, 101) configured to perform possibility determination that determines that the industrial vehicle is in a permission range, in which remote control relating to traveling of the industrial vehicle using the remote control device is permitted, when a state in which the received radio wave intensity acquired by the acquisition portion (36, 101) is greater than or equal to a predetermined first threshold intensity continues for a predetermined first determination period, and determines that the industrial vehicle is in a prohibition range, which is farther from the remote control device than the permission range, when a state in which the received radio wave intensity acquired by the acquisition portion (36, 101) is less than a second threshold intensity, which is less than or equal to the first threshold intensity, continues for a predetermined second determination period, wherein the prohibition range is a range in which remote control relating to traveling of the industrial vehicle using the remote control device is prohibited even under conditions where wireless communication between the vehicle communication portion and the control device communication portion is performed, wherein the acquisition portion (36, 101) is configured to periodically acquire the received radio wave intensity at a predetermined specific interval, the possibility determination portion (36, 101) includes a comparison portion configured to compare the received radio wave intensity acquired by the acquisition portion (36, 101) with the first threshold intensity and the second threshold intensity each time the acquisition portion (36, 101) acquires the received radio wave intensity, and the first determination period and the second determination period are set to be at least twice as long as the specific interval. an industrial vehicle including a vehicle communication portion; a remote control device that includes a control device communication portion, which communicates wirelessly with the vehicle communication portion, and is used to remotely control the industrial vehicle; an acquisition portion (36, 101) configured to acquire a received radio wave intensity of a signal communicated wirelessly between the vehicle communication portion and the control device communication portion; a possibility determination portion (36, 101) configured to perform possibility determination that determines that the industrial vehicle is in a permission range, in which remote control relating to traveling of the industrial vehicle using the remote control device is permitted, when a state in which the received radio wave intensity acquired by the acquisition portion (36, 101) is greater than or equal to a predetermined first threshold intensity continues for a predetermined first determination period, and determines that the industrial vehicle is in a prohibition range, which is farther from the remote control device than the permission range, when a state in which the received radio wave intensity acquired by the acquisition portion (36, 101) is less than a second threshold intensity, which is less than or equal to the first threshold intensity, continues for a predetermined second determination period, determines that the industrial vehicle is in a permission range, in which remote control relating to traveling of the industrial vehicle using the remote control device is permitted, when a state in which the received radio wave intensity acquired by the acquisition portion (36, 101) is greater than or equal to a predetermined first threshold intensity continues for a predetermined first determination period, and determines that the industrial vehicle is in a prohibition range, which is farther from the remote control device than the permission range, when a state in which the received radio wave intensity acquired by the acquisition portion (36, 101) is less than a second threshold intensity, which is less than or equal to the first threshold intensity, continues for a predetermined second determination period, wherein the prohibition range is a range in which remote control relating to traveling of the industrial vehicle using the remote control device is prohibited even under conditions where wireless communication between the vehicle communication portion and the control device communication portion is performed, wherein the acquisition portion (36, 101) is configured to periodically acquire the received radio wave intensity at a predetermined specific interval, the possibility determination portion (36, 101) includes a comparison portion configured to compare the received radio wave intensity acquired by the acquisition portion (36, 101) with the first threshold intensity and the second threshold intensity each time the acquisition portion (36, 101) acquires the received radio wave intensity, and the first determination period and the second determination period are set to be at least twice as long as the specific interval.