Patent ID: 8878693
Filing Date: 2014-11-04
Classification: G08G

Abstract:
1. A driver assistance device to be disposed in a vehicle for assisting a driving operation by a driver of the vehicle, comprising: a traffic signal information acquiring section configured to acquire traffic signal information that includes current and future lighting colors and lighting times of respective lighting colors of a traffic signal located in a traveling direction of the vehicle; an intersection distance acquiring section configured to acquire an intersection distance between the vehicle and an intersection at which the traffic signal is located; an entering speed calculating section configured to calculate an entering speed range to enable the vehicle to enter the intersection in a state where the lighting color of the traffic signal is green; an outputting section configured to output the entering speed range; a speed acquiring section configured to acquire a traveling speed of the vehicle; a first warning section configured to compare the traveling speed of the vehicle with a target speed set within the entering speed range and to output a warning when there is a difference between the traveling speed and the target speed; and a reaction time acquiring section configured to acquire a reaction time from when the first warning section outputs the warning to when the driver performs an operation corresponding to the warning, wherein the first warning section is configured to end the warning when the first warning section, determines that the traveling speed of the vehicle will converge to the target speed after an amount of time corresponding to a stored reaction time has elapsed, before the traveling speed of the vehicle actually converges to the target speed.