An illumination assembly for a vehicle that includes a housing, a light source, and an illumination device with an optical body. The optical body includes: a first major surface; a second major surface; an edge surface; a first reflective feature that includes a recess with side walls; and a second reflective feature that includes a curved reflector. The light source is mounted adjacent the first major surface so as to oppose the first reflective feature. In operation, light emitted from the light source enters the optical body at the first major surface, reflects off of the first and second reflective features, and exits the optical body at the edge surface so as to illuminate an area of interest behind the vehicle.