A support system for providing support in a harvesting operation in an agricultural field, said harvesting operation involving a harvester and two or more transport vehicles for transporting harvested crops; wherein said support system comprises: a mapping unit configured for receiving information associated with coordinates relating to the geometry of said agricultural field; a capacity parameter unit configured for i) receiving one or more capacity parameters relating to the capacity of said harvester; and for ii) receiving one or more capacity parameters relating to the capacity of each of said two or more transport vehicles; a communication unit configured to receive information relating to the current position of each of said two or more transport vehicles; a calculation unit configured for calculating, on the basis of the information received by said mapping unit, said capacity parameter unit and said communication unit: A) the unload position of the harvester at a point where the crop tank of said harvester need to be emptied; and B) in respect of such an unload position, and in relation to the current position of each available transport vehicle, an optimized route to be driven in respect of each of said two or more available transport vehicles in order to arrive at an unload location for unload of crops from said harvester; and C) providing instructions relating to said optimized route to be followed by said specific transport vehicle; characterized in that the mapping unit is configured for receiving information relating to an estimated crop yield distribution of said agricultural field; and the calculation unit is configured for selecting from the group of available transport vehicles a specific transport vehicle which will be able to arrive at said unload location in the least amount of time. a mapping unit configured for receiving information associated with coordinates relating to the geometry of said agricultural field; a capacity parameter unit configured for i) receiving one or more capacity parameters relating to the capacity of said harvester; and for ii) receiving one or more capacity parameters relating to the capacity of each of said two or more transport vehicles; a communication unit configured to receive information relating to the current position of each of said two or more transport vehicles; a calculation unit configured for calculating, on the basis of the information received by said mapping unit, said capacity parameter unit and said communication unit: A) the unload position of the harvester at a point where the crop tank of said harvester need to be emptied; and B) in respect of such an unload position, and in relation to the current position of each available transport vehicle, an optimized route to be driven in respect of each of said two or more available transport vehicles in order to arrive at an unload location for unload of crops from said harvester; and C) providing instructions relating to said optimized route to be followed by said specific transport vehicle; A) the unload position of the harvester at a point where the crop tank of said harvester need to be emptied; and B) in respect of such an unload position, and in relation to the current position of each available transport vehicle, an optimized route to be driven in respect of each of said two or more available transport vehicles in order to arrive at an unload location for unload of crops from said harvester; and C) providing instructions relating to said optimized route to be followed by said specific transport vehicle; characterized in that the mapping unit is configured for receiving information relating to an estimated crop yield distribution of said agricultural field; and the calculation unit is configured for selecting from the group of available transport vehicles a specific transport vehicle which will be able to arrive at said unload location in the least amount of time.