Abstract: A vehicle is equipped with a slide door, a seat provided near an ingress-egress opening, and an ingress-action detector to detect a passenger's ingress action through the ingress-egress opening. The vehicle is further equipped with an illumination device which comprises lower illuminators which are configured to illuminate lower areas which are located below a beltline of the vehicle such that a passenger's upper body is not illuminated, vehicle-inside upper illuminators which are configured to illuminate an upper-specified area in the vehicle compartment which is located above the beltline, and an illumination controller to control the illuminators. When the ingress action is detected by the ingress-action detector, the illumination controller prohibits the illuminations of the illuminators and starts the illuminations of the illuminators.