Driver assistance system for supporting a driver when operating a vehicle V in a road network by means of a support function SF, comprising: - a first interface for providing navigation data ND on the road network, - a position detection unit for detecting a position PV of the vehicle V, - a sensor system, with which the current surroundings of the vehicle V can be scanned at the position PV for producing environmental data E, - a first evaluation unit, with which data D2 on objects O2 l can be identified, which are displayed in the environmental data E, and - a control and/or regulating unit for performing the at least one support function SF, characterized in that - a second interface for providing at least the following first data D1 on objects O1 l is available, which are arranged along traffic routes of the road network, with i = 1, 2,..., 1, 1 ≥ 1: object type OT(O1 l), position POS(O1 l) and danger index INDEX(O1 l), wherein the second interface is an interface to a storage unit arranged in the vehicle, on which the first data D1 are saved, or an interface to a receiver unit, which wirelessly receives the first data D1 from a central computer, - the data D2 on the objects O2 l identified by the evaluation unit comprise at least the following information, with l = 1, 2,..., L, L ≥ 0: object type OT(O2 l), position POS(O2 l) and danger index INDEX(O2 l), wherein the INDEX(x) respectively indicates a danger for the vehicle V and/or its occupants in the case of a collision between the vehicle and the respective object x, - a merging unit for comparing and merging the first data D1 and the second data D2 to third data D3 = D3(D1, D2) is available, wherein the third data relate to objects O3 y, which result from the objects O1 l and O2 l as a result of the comparison and merging of the first data D1 and the second data D2, with v = 1, 2,... V, V ≥ 1, V ≤ 1 + L, and O3 v ∈ {O1 i, O2 l}, and wherein danger indices INDEX(O3 v) are assigned for the objects O3 v based on the danger indices INDEX(O1 l) and INDEX(O2 l), and wherein the support function SF is performed depending on the third data and the navigation data ND SF = SF(D3, PV, ND). - a first interface for providing navigation data ND on the road network, - a position detection unit for detecting a position PV of the vehicle V, - a sensor system, with which the current surroundings of the vehicle V can be scanned at the position PV for producing environmental data E, - a first evaluation unit, with which data D2 on objects O2 l can be identified, which are displayed in the environmental data E, and - a control and/or regulating unit for performing the at least one support function SF, - a second interface for providing at least the following first data D1 on objects O1 l is available, which are arranged along traffic routes of the road network, with i = 1, 2,..., 1, 1 ≥ 1: object type OT(O1 l), position POS(O1 l) and danger index INDEX(O1 l), wherein the second interface is an interface to a storage unit arranged in the vehicle, on which the first data D1 are saved, or an interface to a receiver unit, which wirelessly receives the first data D1 from a central computer, - the data D2 on the objects O2 l identified by the evaluation unit comprise at least the following information, with l = 1, 2,..., L, L ≥ 0: object type OT(O2 l), position POS(O2 l) and danger index INDEX(O2 l), wherein the INDEX(x) respectively indicates a danger for the vehicle V and/or its occupants in the case of a collision between the vehicle and the respective object x, - a merging unit for comparing and merging the first data D1 and the second data D2 to third data D3 = D3(D1, D2) is available, wherein the third data relate to objects O3 y, which result from the objects O1 l and O2 l as a result of the comparison and merging of the first data D1 and the second data D2, with v = 1, 2,... V, V ≥ 1, V ≤ 1 + L, and O3 v ∈ {O1 i, O2 l}, and wherein danger indices INDEX(O3 v) are assigned for the objects O3 v based on the danger indices INDEX(O1 l) and INDEX(O2 l), and