VEHICLE TRAVEL CONTROL DEVICE

摘要

Free-run coasting, which produces excellent fuel efficiency by traveling with an engine (12) stopped, is started when an inter-vehicle distance (X) is greater than a first determination value (α1) and the need for negative pressure is thus low. Coasting in neutral, which produces appropriate amplification of the brake-pedal force (Brk) via a brake booster (42) by traveling with the engine (12) still running, is started even if the inter-vehicle distance (X) is less than or equal to the first determination value (α1) and the need for negative pressure is thus comparatively high. As such, overall fuel economy can be further improved while appropriately ensuring amplification of the brake-pedal force (Brk).