The operation mode of the ASCD is indicated on the information display in the combination meter. When turning ON the MAIN switch of the ASCD steering switch, the CRUISE lamp turns ON, CRUISE is indicated on the information display and the operation mode turns to standby mode. When turning ON the SET/COAST switch while the vehicle is driven at the ASCD setting condition speed range, the SET lamp turns ON and the set speed is indicated on the information display. When the canceling conditions come into effect, CANCEL is indicated on the information display.