CONTROL DEVICE AND METHOD FOR CONTROLLING A LOOK-AHEAD CRUISE CONTROL OF A VEHICLE

A control device (100) and a method for controlling a look-ahead cruise control (20) of a vehicle (1) are provided. The method comprises determining (S101) a first value of a parameter representing estimated propulsion energy consumption by the vehicle (1) for an upcoming road section based on a first set of control values defining allowable vehicle speed interval, said first set of control values constituting a currently selected set of control values and representing a first estimated vehicle speed profile (31). The method further comprises determining (S102) a second value of the parameter based on a second set of control values defining allowable vehicle speed interval, said second set of control values representing a second estimated vehicle speed profile (32). A first cost variable value (33) is determined based on a difference between the determined first and second values of the parameter and presented to a driver of the vehicle. The method also comprises enabling (S106) the driver to request adjustment of the currently selected set of control values of the look-ahead cruise control (20) to the second set of control values.