A method, arrangement, computer program product, and user interface for optimizing timber transport planning and/or implementation, comprising retrieving from an information system memory information describing timber units (1a, 1b) in a defined area, retrieving from the information system memory information on available forest truck roads (3), driving routes (4a, 4b), storage areas (5), and route points (6), selecting at least one collection route (7) by selecting with the user interface at least the start and end points of the collection route, determining the amount and/or quality of the timber in the collection area defined by the collection route between the start and end points, and forwarding to the user feedback formed by a predefined data model, the feedback comprising information at least on the timber and/or efficiency of collection.
