Lighting system for motor vehicles

A lighting device for motor vehicles comprising:

• an optical waveguide element (1, 14) that has a light entrance surface (2, 16) for the light of at least one light source (6, 4;
• 11;
• 17) and a light exit surface (3, 15);
• an electric light-emitting layer (9, 10;
• 19) on at least part of at least one surface of the optical waveguide element (1, 14);
• and
• an optical waveguide (4;
• 17) that has at least one input point (5) for light of at least one light source (6),
• wherein the optical waveguide (4;
• 17) is bar-shaped and has, along at least part of its length, an arrangement of irregular structures (7) and a light exit surface (8) opposite it, the light entrance surface (2;
• 16) of the optical waveguide element (1;
• 14) being connected to the light exit surface (8) of the bar-shaped optical waveguide through means provided by lighting engineering.