Abstract: A controlling of a lighting network based on traffic monitoring comprises steps of determining plurality of coverage areas of set of luminaires, where each luminaire comprises at least one light source. Information related to a presence of users in said coverage areas is received. This may relate both outdoor or indoor areas and activity. A status of at least certain luminaire is then changed to a reserve status, when a last detected user exits the coverage area. Each coverage area or luminaire is providing with an expected value for the time of when the next user is expected to arrive in the coverage area of said luminaire, A set of luminaires [R] of said luminaires with the reserve status to be controlled, such as dimmed, is then defined and information related to demand response requests [D1, . . . , Dn] of an electric power grid is received.

Abstract: A controlling of a lighting network based on traffic monitoring comprises steps of determining plurality of coverage areas of set of luminaires, where each luminaire comprises at least one light source. Information related to a presence of users in said coverage areas is received. This may relate both outdoor or indoor areas and activity. A status of at least certain luminaire is then changed to a reserve status, when a last detected user exits the coverage area. Each coverage area or luminaire is providing with an expected value for the time of when the next user is expected to arrive in the coverage area of said luminaire, A set of luminaires [R] of said luminaires with the reserve status to be controlled, such as dimmed, is then defined and information related to demand response requests [D1, . . . , Dn] of an electric power grid is received.