| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique for improving accuracy in presuming a travelling direction before a right turn or a left turn, regardless of timing to give direction indication.SOLUTION: A terminal device 14 may be installed in a vehicle. An acquisition section 64 acquires the travelling direction of the vehicle in which the terminal device is installed and an indication direction indicated by a direction indicator. When the acquisition section 64 starts acquiring the indication direction, a trigger control section 80 stores the travelling direction acquired by the acquisition section 64 in a storage section 82. When the travelling direction acquired by the acquisition section 64 is changed to an opposite direction to the indication direction after the acquisition section 64 starts acquiring the indication direction, the trigger control section 80 updates the travelling direction stored in the storage section 82. On the other hand, when the travelling direction acquired by the acquisition section 64 is changed to the indication direction, the trigger control section 80 keeps the travelling direction stored in the storage section 82.SELECTED DRAWING: Figure 4 |
