Vehicle travel control apparatus

摘要

The invention carries out appropriate travel control so that a vehicle travels along recognized lane markings, and at the same time, prevents making the driver feel discomfort during travel control. In the case that the white line recognition becomes not possible, the delay time TD is shortened depending on a previous continuous time interval of a recognition state. In the case that the white line recognition flag becomes possible, the delay time TD is extended depending on the previous continuous time interval. In the case that the count value of the ON time measuring counter TON is equal to or greater than the delay time TD and the white line recognizing is possible, the compensation control is permitted, and reversion to the ON state of the travel control based on recognized white lines is permitted.