| 摘要 |
<p>A straight-travelling/turning determination device 100 includes a straight-travelling/turning determiner 128 that determines whether a motorcycle 10 is travelling straight or turning by comparing a threshold value and a rotational speed comparison value (a value resulting from comparison between the front wheel rotational speed and the rear wheel rotational speed). The straight-travelling/turning determiner 128 uses the rotational speed comparison value obtained when the vehicle speed is equal to or lower than a first predetermined speed, an absolute value of the vehicle acceleration is equal to or lower than a predetermined acceleration, and a blinker 102 is not being actuated, as a straight-travelling rotational speed comparison value, and determines that the motorcycle 10 is turning if a ratio or difference between the rotational speed comparison value and the straight-travelling rotational speed comparison value is larger than a threshold value. This provides enhanced accuracy of determination as to whether a vehicle is travelling straight or turning.</p> |
