SITUATION-BASED SPEED REDUCTION FOR PREDICTIVE CRUISE CONTROL

A computer system (4) comprising a processor device (3) configured to:a) control (M1) a prime mover of the first vehicle (2) to operate the first vehicle (2) at a target set speed,b) determine (M2) a rear traffic condition indicating whether there is a risk of being overtaken by a second vehicle (1) travelling behind the first vehicle (2),c) determine (M3) a topography of an upcoming road to be travelled by the first vehicle (2), andd) reduce (M4) the target set speed of the first vehicle (2) from a nominal set speed (V4), said nominal set speed (V4) being the current speed of the first vehicle (2), to a reduced set speed (V5), in response to the indicating a descending road condition (Z) and the rear traffic condition not indicating a risk of being overtaken by the second vehicle (1) before arriving at the descending road condition (Z).