Abstract: The invention relates to a halogen automotive lamp for pulse width operation, a lighting assembly including a halogen lamp and to a method of operating a halogen lamp. The lamp comprises a transparent lamp vessel with a gas filling comprising a rare gas component and a halogen component. A filament is arranged within the vessel. In conventional halogen lamps operation with pulsed electrical power, such as e.g. PWM operation of automotive halogen lamps for cornering and bending light lead to shortened lifetimes. In order to propose a lamp with increased lifetime under pulse operation, the gas filling comprises nitrogen in an amount of 0.1-5 mol-%. It has surprisingly been found that filament deformation may be counteracted by the corresponding small amount of nitrogen.