Patent ID: 7904246

Claim:
A vehicle driving assist system comprising: a traveling situation detecting section configured to output a traveling situation detection result based on at least a following distance between a host vehicle and a preceding obstacle and a host vehicle speed of the host vehicle; a risk potential calculating section configured to calculate a risk potential indicative of a degree of convergence between the host vehicle and the preceding obstacle based on the traveling situation detection result of the traveling situation detecting section; an actuation reaction force control section configured to control an actuation reaction force exerted by an accelerator pedal of the host vehicle based on the risk potential calculated by the risk potential calculating section; a host vehicle behavior control section configured to control a behavior of the host vehicle; a behavior control operating state notifying section configured to notify a driver in advance of a future operating state of the host vehicle behavior control section while the actuation reaction force control section is executing control of the actuation reaction force exerted by the accelerator pedal; a driver operation recommendation section configured to provide the driver with a recommended driving operation in accordance with the future operating state of the host vehicle behavior control section, the recommended driving operation being distinct from notification to the driver of the future operating state; and a control state transition mode determination section configured to determine a control state transition mode that indicates how the future operating state of the host vehicle behavior control section will change, the behavior control operating state notifying section notifying the driver in advance of the future operating state of the host vehicle behavior control section based on a result of a determination of the control state transition mode determination section, and the driving operation recommendation section determining the recommended driving operation based on the result of the determination of the control state transition mode determination section.