| 摘要 |
A device includes a first unit that calculates a prediction error range of a predicted arrival time in a first route to a destination, a second unit that calculates a prediction error range of a predicted arrival time in a second route different from the first route at a point where the first route and the second route are branched, and an output unit that outputs at least one of the prediction error range of the first route or the prediction error range of the second route. At least one of the first unit or the second unit calculates the prediction error range based on information having correlation with the prediction error range at the point, and the output unit performs determination about the aspect of output of the prediction error ranges of the first route and the second route based on whether or not the prediction error range changes. |
