SITUATION BASED UNDER SPEED FOR A PREDICTIVE CRUISE CONTROL

A computer system comprising a processor device configured to: control a prime mover of the first vehicle to operate the first vehicle at a target set speed, determine a rear traffic condition indicating whether there is a risk of being overtaken by a second vehicle travelling behind the first vehicle, determine a topography of an upcoming road to be travelled by the first vehicle, and reduce the target set speed of the first vehicle from a nominal set speed, said nominal set speed being the current speed of the first vehicle, to a reduced set speed, in response to the indicating a descending road condition and the rear traffic condition not indicating a risk of being overtaken by the second vehicle before arriving at the descending road condition.