Patent ID: 8781704

Claim:
A traveling assistant system for a vehicle without a contact wire, the traveling assistant system being configured to calculate a velocity pattern in a traveling interval from a current stop station to a next station, the traveling assistant system comprising: a memory means which previously stores traveling schedule information of the vehicle, information on the next station located on the traveling interval, and information about a plurality of traffic lights on the traveling interval; and a velocity pattern calculation means which calculates a velocity pattern of the vehicle based on the traveling schedule information, the information on the next station, and the information about the plurality of the traffic lights, wherein when calculating the velocity pattern in an interval from the current stop station to a first traffic light of the plurality of traffic lights, the velocity pattern calculation means calculates a velocity pattern which satisfies conditions that the vehicle is never stopped at the first traffic light, that the vehicle accelerates at an constant acceleration when the vehicle departs from the current stop station, and that after the acceleration, the vehicle travels at a constant first velocity, and wherein the first velocity is calculated based on a traveling time taken from the current stop station to the first traffic light when the vehicle travels at a maximum velocity, a traveling time taken from the current stop station to the first traffic light calculated considering the traveling schedule information, a traveling distance from the current stop station to the first traffic light, information on the first traffic light, and the constant acceleration.