POSITION INFORMATION SHARING SYSTEM, POSITION INFORMATION SHARING METHOD, AND POSITION INFORMATION SHARING PROGRAM

摘要

[Object] To provide a positional information sharing system, a positional information sharing method, and a positional information sharing program that is capable of sharing further accurate positions of respective users between each other. [Solving mean] The positional information sharing system includes: a current position detecting part 34 that detects a vehicle position on a basis of information directly obtained from a vehicle; a communication part 35 that is installed in the vehicle and performs communication; a current position detecting part 24 that detects a terminal position using a GPS; a communication part 25 that is installed in a portable terminal and performs communication; and a communication availability determining part 26a that determines whether mutual communication between the communication part 35 and the communication part 25 is available, in which, in a case in which it is determined that the mutual communication is available, the portable terminal 2 mutually shares the vehicle position with a different portable terminal 2, and in a case in which it is determined that the mutual communication is not available, the portable terminal 2 mutually shares the terminal position with the different portable terminal 2.