An onboard apparatus comprises a communication unit; and a controller configured to execute: detecting start of running of a vehicle provided for sharing a ride, detecting a driver at the start of running, detecting change of the driver after the start of running and measuring passage information including at least one of running time and running distance from the start of running until the change of the driver, and transmitting the measured passage information to an information processing apparatus via the communication unit along with identification information for identifying the driver detected before the change of the driver.