A positional information transmitting program executed by a computer (10, 50) in a system, the system comprising: a first terminal carried by a user; a moving machine; a second terminal; and a server including a server communicator communicable with a terminal communicator of the first terminal and a terminal communicator of the second terminal, the positional information transmitting program transmitting positional information of the first terminal from the first terminal through the server to the second terminal, the positional information transmitting program making the computer (10, 50) serve as: a situation determiner that determines based on moving machine detection information output from the moving machine whether or not the user is in a nearby range preset for the moving machine; a positional information acquirer that acquires positional information indicating a position of the first terminal; and a transmission controller that controls at least one of the terminal communicator or the server communicator to transmit the positional information from the first terminal through the server to the second terminal in such a transmission mode that whether or not the user is in the nearby range is determinable characterized in that: the positional information transmitting program makes the computer (10, 50) further serve as a position determiner that determines whether or not the positional information acquired by the positional information acquirer satisfies a preset condition; and when the situation determiner determines that the user is in the nearby range, and the position determiner determines that the positional information satisfies the preset condition, the transmission controller controls at least one of the terminal communicator or the server communicator not to transmit the positional information from the first terminal through the server to the second terminal. a first terminal carried by a user; a moving machine; a second terminal; and a server including a server communicator communicable with a terminal communicator of the first terminal and a terminal communicator of the second terminal, the positional information transmitting program transmitting positional information of the first terminal from the first terminal through the server to the second terminal, the positional information transmitting program making the computer (10, 50) serve as: a situation determiner that determines based on moving machine detection information output from the moving machine whether or not the user is in a nearby range preset for the moving machine; a positional information acquirer that acquires positional information indicating a position of the first terminal; and a transmission controller that controls at least one of the terminal communicator or the server communicator to transmit the positional information from the first terminal through the server to the second terminal in such a transmission mode that whether or not the user is in the nearby range is determinable characterized in that: the positional information transmitting program makes the computer (10, 50) further serve as a position determiner that determines whether or not the positional information acquired by the positional information acquirer satisfies a preset condition; and when the situation determiner determines that the user is in the nearby range, and the position determiner determines that the positional information satisfies the preset condition, the transmission controller controls at least one of the terminal communicator or the server communicator not to transmit the positional information from the first terminal through the server to the second terminal. a situation determiner that determines based on moving machine detection information output from the moving machine whether or not the user is in a nearby range preset for the moving machine; a positional information acquirer that acquires positional information indicating a position of the first terminal; and a transmission controller that controls at least one of the terminal communicator or the server communicator to transmit the positional information from the first terminal through the server to the second terminal in such a transmission mode that whether or not the user is in the nearby range is determinable characterized in that: the positional information transmitting program makes the computer (10, 50) further serve as a position determiner that determines whether or not the positional information acquired by the positional information acquirer satisfies a preset condition; and when the situation determiner determines that the user is in the nearby range, and the position determiner determines that the positional information satisfies the preset condition, the transmission controller controls at least one of the terminal communicator or the server communicator not to transmit the positional information from the first terminal through the server to the second terminal. the positional information transmitting program makes the computer (10, 50) further serve as a position determiner that determines whether or not the positional information acquired by the positional information acquirer satisfies a preset condition; and when the situation determiner determines that the user is in the nearby range, and the position determiner determines that the positional information satisfies the preset condition, the transmission controller controls at least one of the terminal communicator or the server communicator not to transmit the positional information from the first terminal through the server to the second terminal.