Vehicle speed determination system, stability control system, and saddled or straddle-type vehicle having the same

摘要

A vehicle speed while cornering or curving through steering maneuver is determined. A vehicle speed determination system is applicable to a vehicle having a front wheel (8) and a rear wheel (23). The system includes: a wheel speed sensor (35) configured to detect a wheel speed V f of the front wheel (8); and an arithmetic section for determining a vehicle speed V(r) at a point on the rear wheel (23), based on a difference between a vehicle speed at a point on the front wheel (8) and the point on the rear wheel (23) that occurs due to a difference between a locus of travel of the front wheel (8) and a locus of travel of the rear wheel (23), and on the wheel speed V f of the front wheel (8).