A method and a device for the automated adaptation of a brightness of at least one light for a vehicle. The method includes a step of determining a position and/or a moving direction of the vehicle relative to a first and/or second national territory; a step of ascertaining data that represent a brightness requirement for the at least one light as a function of the position and/or moving direction of the vehicle; and a step of the automated adaptation of the brightness of at least one light as a function of the ascertained data.