A method for assisting overtaking, said method comprising - determining a first speed (v 1) of a first vehicle (3, 3'), - determining a first distance (d 1) to a second vehicle (7, 7') travelling in front of said first vehicle (3,3') and a second speed (v 2) of said second vehicle (7, 7') by at least one first sensor comprised in said first vehicle (3, 3'), - determining that said second speed (v 2) is less than said first speed (v 1), - determining a second distance (d 2) to a third vehicle (9, 9') travelling behind said first vehicle (3, 3') and a third speed (v 3) of said third vehicle (9, 9') by at least one second sensor comprised in said first vehicle (3, 3'), - determining that said third speed (v 3) is higher than said first speed (v 1), - determining a first speed change of said first vehicle (3, 3'), said first speed change being associated with a first driving operation allowing said first vehicle (3, 3') to keep at least a selectable first safety distance to said second vehicle (7, 7') while said third vehicle (9, 9') overtakes said first vehicle (3, 3'), - determining a second speed change of said first vehicle (3, 3'), said second speed change being associated with a second driving operation allowing said first vehicle (3,3') to keep at least a selectable second safety distance to said third vehicle (9, 9') while said first vehicle (3, 3') overtakes said second vehicle (7, 7'), - comparing said first speed change and said second speed change to find a most favourable speed change, - performing said driving operation associated with said most favourable speed change for said first vehicle (3, 3'). - determining a first speed (v 1) of a first vehicle (3, 3'), - determining a first distance (d 1) to a second vehicle (7, 7') travelling in front of said first vehicle (3,3') and a second speed (v 2) of said second vehicle (7, 7') by at least one first sensor comprised in said first vehicle (3, 3'), - determining that said second speed (v 2) is less than said first speed (v 1), - determining a second distance (d 2) to a third vehicle (9, 9') travelling behind said first vehicle (3, 3') and a third speed (v 3) of said third vehicle (9, 9') by at least one second sensor comprised in said first vehicle (3, 3'), - determining that said third speed (v 3) is higher than said first speed (v 1), - determining a first speed change of said first vehicle (3, 3'), said first speed change being associated with a first driving operation allowing said first vehicle (3, 3') to keep at least a selectable first safety distance to said second vehicle (7, 7') while said third vehicle (9, 9') overtakes said first vehicle (3, 3'), - determining a second speed change of said first vehicle (3, 3'), said second speed change being associated with a second driving operation allowing said first vehicle (3,3') to keep at least a selectable second safety distance to said third vehicle (9, 9') while said first vehicle (3, 3') overtakes said second vehicle (7, 7'), - comparing said first speed change and said second speed change to find a most favourable speed change, - performing said driving operation associated with said most favourable speed change for said first vehicle (3, 3').