A lighting system for vehicles, comprising a pair of lighting devices (2,3) designed to be mounted at opposite outboard front sides of a vehicle, each said lighting devices comprising an housing body having a front inlet opening arranged to face in use toward a forward driving direction of the vehicle, a main lighting module and at least two secondary lighting modules (13,14,15) arranged inside the housing body facing the inlet opening, the main lighting module being carried rigid and stationary by the respective housing body, while the at least two secondary lighting modules (13,14,15) being carried rotatable in relation to the housing body and to the main lighting module, each around a respective its own first axis (A,B,C), the first axes (A,B,C) being arranged parallel to each other and transverse to an horizontal plane in use; the pair of lighting devices (2,3) being designed to generate on a test screen placed in front of the lighting device, when they are switched on, respective overall light projections (7,8) which partially overlap in an horizontal direction; the lighting system further comprising a control unit to switch on/off selectively the main lighting module and the secondary lighting modules (13,14,15) of each lighting device (2,3); wherein i)- the main lighting module and the secondary lighting modules (13,14,15) of each lighting device are designed to generate each, when switched on, an individual light projection on the test screen, the sum of the individual light projections of the modules of each lighting device forming the overall light projection (7,8) generated by each lighting device; ii)- the at least two secondary lighting modules (13,14,15) of each lighting device are designed and/or arranged within the respective housing body so as to generate on the test screen, when they are switched on, respective individual light projections (21-23,25-27) which are arranged at least in part offset to one another in a vertical direction; characterized in that, iii)- each of the secondary lighting modules are rotatable around the respective its own first axis (A,B,C) independently of one another and are further rotatable, all together or at least one independently of the others, around a second axis arranged substantially perpendicular to the first axes; iv)- the control unit being designed to selectively rotate the secondary lighting modules of the same or different angles around the first axes and around the second axis and to switch on/off the secondary lighting modules of each lighting device independently of the switching on/off of the main lighting module of each and the same lighting device (2,3). i)- the main lighting module and the secondary lighting modules (13,14,15) of each lighting device are designed to generate each, when switched on, an individual light projection on the test screen, the sum of the individual light projections of the modules of each lighting device forming the overall light projection (7,8) generated by each lighting device; ii)- the at least two secondary lighting modules (13,14,15) of each lighting device are designed and/or arranged within the respective housing body so as to generate on the test screen, when they are switched on, respective individual light projections (21-23,25-27) which are arranged at least in part offset to one another in a vertical direction; characterized in that, iii)- each of the secondary lighting modules are rotatable around the respective its own first axis (A,B,C) independently of one another and are further rotatable, all together or at least one independently of the others, around a second axis arranged substantially perpendicular to the first axes; iv)- the control unit being designed to selectively rotate the secondary lighting modules of the same or different angles around the first axes and around the second axis and to switch on/off the secondary lighting modules of each lighting device independently of the switching on/off of the main lighting module of each and the same lighting device (2,3).