An illuminated roof/luggage rack for automobiles and other vehicles incorporates turn indicators and/or side lights to enhance noticeability and safety. Preferably, the turn indicators are provided on all four corners of the rack structure, and the side lights run the entire length of the side members. Rear-facing braking lights may also be provided, all of which are operated in conjunction with the vehicle's electrical system. In one alternative embodiment, rows of lights on either side alternate ON and OFF to attract additional attention by appearing to flicker up and down or to simulate wave sequences. A somewhat different alternative embodiment includes illuminated side lettering or decorations. Such indicia, which may be permanent or changeable, may be used to exhibit commercial or personal messages, for example for HELP or for other announcements. The preferred embodiment also includes convenient electric power outlets disposed at one or more of the four corners of the structure, also interconnected to the vehicle's electrical system through an inverter to produce line voltage. Side rails with broad bases are preferably used to reduce load deflection in the event that thin roof sheet-metal is all that is available at the point of mounting attachment. As opposed to self-illumination, a further alternative embodiment instead illuminates the roof of the vehicle itself.