A driver-assistance system for controlling a speed of a vehicle dependent on at least two further vehicles in front of the vehicle, the driver-assistance system comprising:
- a control system;
- and
- a sensor system configured for detecting a respective further speed of the respective further vehicle,
- wherein the control system is configured to:
- perform a weighting of the further speeds to each other and to determine a target speed of the vehicle dependent on the respective further speed and dependent on the weighting of the further speeds, and
- control the speed of the vehicle dependent on the target speed.