A controversial aspect of the Derby Festival is "Derby Cruising." Though it is not an official or licensed event during Derby Festival, it takes place in the historically black areas of West Broadway on Derby day and the Friday before it. Cruising consists of motorcycles and cars (many elaborately modified) driving slowly down Broadway, pedestrians crowding the sidewalks, and several blocks closed for a festival with rides and street vendors. The gridlock associated with cruising made it difficult for police to respond to instances of violence during 2005 Derby cruising. In 2006, police made an effort to stop cruising, shutting down Broadway except to emergency vehicles, which resulted in suggestions of racial profiling and much public debate about the legitimacy of Broadway cruising as a free alternative to other festivities.