Device for nighttime motor vehicle driving assistance

A device for assisting the nighttime driving of a motor vehicle, the vehicle being fitted with at least one lighting device for emitting a beam for the illumination of the road scene (S) in front of the vehicle in accordance with regulations,

• an illumination (E) emitted by said at least one lighting device being variable between a maximum value (EMAX) and a minimum value (Emin);
• the device including at least one variable-transmission screen (F) placed between the road scene (S) and a driver of the vehicle;
• a coefficient of transmission (CT) of said at least one variable-transmission screen being variable between a maximum value (CTMAX) and a minimum value (CTmin);
• a switching on of at least one light source of said at least one lighting device and said coefficient of transmission (CT) of said at least one variable-transmission screen (F) being controlled by a same control unit in synchronization;
• said illumination (E) reaching its maximum value (EMAX) substantially when said coefficient of transmission (CT) of said at least one variable-transmission screen reaches its maximum value (CTMAX);
• wherein said control unit controls a circuit for regulating a power supply to said at least one light source of said at least one lighting device and a transmitter of remote control waves (OT) directed toward a receiver.