A method (400), control device (240) and measuring unit (230) for adapting a control algorithm having at least one driver-dependent parameter, which control algorithm governs the control of a vehicle convoy (200) in which at least a first vehicle 220A with a first driver (210A) and a second vehicle 220B with a second driver (210B) are included. The method includes measurement (401) of at least one physical characteristic of the first driver (210A), determination (402) of the stress level of the driver based on the performed measurement (401), and adaptation (403) of the control algorithm to the determined (402) stress level of the driver.