Abstract: A highly reliable, manually deployable safety reflector device which can be easily installed on a vehicle includes a bracket and a reflector member mounted on the bracket for rotation between a storage position and a deployed position. The bracket or reflector member define a tubular sleeve, and the other of the bracket or reflector member include a shaft rotatably disposed in the sleeve. One of the sleeve or shaft includes a plurality of indentations, and the other of the sleeve or shaft includes a plurality of protuberances configured to project into and resiliently engage the plurality of indentations, whereby resilient engagement between the protuberances and the indentations lock the reflector member in one of the deployed or storage positions as desired.