Rear-view side mirror assembly for a vehicle, comprising a light signal assembly and a system for optical vision by mirror, which comprises: - a housing having at least a first opening oriented backwards; - a mirror placed at said first opening for providing a vision of the vehicle environment; - a support for the fixation of said rear-view side mirror assembly to the bodywork of said vehicle; - a light emitter assembly placed in said housing including a light source formed by a plurality of associated light emitters (30, 30-C, 212, 95) providing a light signal with a light output through a second opening, said light signal being emitted at least in one of two different directions: ∘ a first direction of emission towards the front forming a front spot (F1', F1bis, 3, 3bis) according to a frontal projection on an ideal plane located in front of the vehicle and perpendicular to the circulating axis thereof; and ∘ a second direction of emission towards the rear and towards one side of the vehicle with respect to the circulating direction of the vehicle said second direction of emission does not affect the driver as the driver's eyes remaining in a shadow area; and - an inner surface (12, 12-X) at said light emitter assembly; characterized in that: ∘ said light emitter assembly providing said front spot being located at the rear of the mirror; ∘ said inner surface (12, 12-X) is associated to reflection elements (112, 12, 13, 3bis), surrounding, isolating, delimiting and/or splitting into sectors said emitters (30, 30-C, 212, 95) forming the frontal spot (F1, F1', F1bis, 3bis), said reflections elements being intended to deviate part of the light generated by said light source, to reflect, to concentrate and to direct it on the front focal axis (32, 32bis) of at least one of said light emitters, forming a set of beams substantially parallel to each other (32, 32bis) and/or radial to each other (32, 32bis), which are emitted through said second opening in the direction of said frontal projection being at least one of said focal axes substantially coincident with the circulating axis of the vehicle; and ∘ said reflection elements have a defined form selected from a parabola, a cone, or collimator (112, 12, 13). - a housing having at least a first opening oriented backwards; - a mirror placed at said first opening for providing a vision of the vehicle environment; - a support for the fixation of said rear-view side mirror assembly to the bodywork of said vehicle; - a light emitter assembly placed in said housing including a light source formed by a plurality of associated light emitters (30, 30-C, 212, 95) providing a light signal with a light output through a second opening, said light signal being emitted at least in one of two different directions: ∘ a first direction of emission towards the front forming a front spot (F1', F1bis, 3, 3bis) according to a frontal projection on an ideal plane located in front of the vehicle and perpendicular to the circulating axis thereof; and ∘ a second direction of emission towards the rear and towards one side of the vehicle with respect to the circulating direction of the vehicle said second direction of emission does not affect the driver as the driver's eyes remaining in a shadow area; and ∘ a first direction of emission towards the front forming a front spot (F1', F1bis, 3, 3bis) according to a frontal projection on an ideal plane located in front of the vehicle and perpendicular to the circulating axis thereof; and ∘ a second direction of emission towards the rear and towards one side of the vehicle with respect to the circulating direction of the vehicle said second direction of emission does not affect the driver as the driver's eyes remaining in a shadow area; and - an inner surface (12, 12-X) at said light emitter assembly; ∘ said light emitter assembly providing said front spot being located at the rear of the mirror; ∘ said inner surface (12, 12-X) is associated to reflection elements (112, 12, 13, 3bis), surrounding, isolating, delimiting and/or splitting into sectors said emitters (30, 30-C, 212, 95) forming the frontal spot (F1, F1', F1bis, 3bis), said reflections elements being intended to deviate part of the light generated by said light source, to reflect, to concentrate and to direct it on the front focal axis (32, 32bis) of at least one of said light emitters, forming a set of beams substantially parallel to each other (32, 32bis) and/or radial to each other (32, 32bis), which are emitted through said second opening in the direction of said frontal projection being at least one of said focal axes substantially coincident with the circulating axis of the vehicle; and ∘ said reflection elements have a defined form selected from a parabola, a cone, or collimator (112, 12, 13).