An automotive light comprising: a rear body adapted to be fixed to the vehicle; a front half-shell arranged to close the mouth of said rear body ; and at least one lighting assembly that is located inside the rear body and is adapted to backlight a corresponding transparent or semi-transparent sector of the front half-shell ; said lighting assembly comprising: at least one light-guide plate of suitable thickness, which is made of photoconductive material; and a set of electrically -powered light sources that are located close to a first side of the light-guide plate and direct the light produced into the body of the same light-guide plate via a facing first lateral sidewall of the same plate so that said light propagates within the body of the light-guide plate by total internal reflection; wherein said light-guide plate is located inside the rear body with a first face facing the front half-shell and a second face facing the bottom of the rear body ; wherein said light-guide plate has a perimeter light-exit band extending along the perimeter of the first face of the light-guide plate , for at least two consecutive sides of the same light-guide plate , and is structured so as to cause the light to come out of the same light-guide plate ; wherein the first lateral sidewall of said light-guide plate is opposite to a first segment of said perimeter light-exit band ; said automotive light being characterized in that said light-guide plate also has, on its first or second face, a light-distributing recess of given shape, which has a depth less than the local thickness (s) of the light-guide plate , is interposed between said first lateral sidewall and said first segment of the perimeter light-exit band , and is shaped so as to distribute part of the light coming from the first lateral sidewall of the light-guide plate substantially along the whole length of said perimeter light-exit band . said lighting assembly comprising: at least one light-guide plate of suitable thickness, which is made of photoconductive material; and a set of electrically -powered light sources that are located close to a first side of the light-guide plate and direct the light produced into the body of the same light-guide plate via a facing first lateral sidewall of the same plate so that said light propagates within the body of the light-guide plate by total internal reflection; wherein said light-guide plate is located inside the rear body with a first face facing the front half-shell and a second face facing the bottom of the rear body ; wherein said light-guide plate has a perimeter light-exit band extending along the perimeter of the first face of the light-guide plate , for at least two consecutive sides of the same light-guide plate , and is structured so as to cause the light to come out of the same light-guide plate ; wherein the first lateral sidewall of said light-guide plate is opposite to a first segment of said perimeter light-exit band ; said automotive light being characterized in that said light-guide plate also has, on its first or second face, a light-distributing recess of given shape, which has a depth less than the local thickness (s) of the light-guide plate , is interposed between said first lateral sidewall and said first segment of the perimeter light-exit band , and is shaped so as to distribute part of the light coming from the first lateral sidewall of the light-guide plate substantially along the whole length of said perimeter light-exit band . <EOS>