A timber handling vehicle, including a load compartment for timber, a crane with a timber grip for handling of timber to and from the load compartment, a hydraulic cylinder for actuating the timber grip, a hydraulic system (11, 12) having a motor-driven pump, a tank for a fluid as well as a control valve with which a fluid flow set under pump feed pressure can be selectively supplied to a plus side (15:1) of the hydraulic cylinder via a first pipe connected to same, respectively a minus side (15:2) via a second pipe connected to same, characterised in that the hydraulic system (11, 12) has a third pipe, which results in a regenerative fluid flow from the minus side (15:2) to the plus side (15:1) of the hydraulic cylinder, a pressure-sensing valve means, which is arranged to the second pipe, and which valve means is configured to; drive in a first operating condition, wherein the valve means is closed and the fluid flow from the minus side (15:2) to the plus side (15:1) of the hydraulic cylinder is directed via said third pipe, receive a pressure indication, indicating a pump feed pressure on the hydraulic cylinder's plus side (15:1), determine whether the pump feed pressure exceeds a first operating condition threshold value, and, if so, drive in a second operating condition, wherein the valve means is open and fluid flow from the hydraulic cylinder's minus side (15:2) is directed to the tank 16 wherein the valve means is configured to; determine whether the pump feed pressure on the hydraulic cylinder's plus side (15:1) exceeds the first operating condition threshold value, but is below a second operating condition threshold value, and, if so, vary the degree of opening in an intermediate transition area, wherein the fluid flow from the minus side (15:2) to the plus side (15:1) of the hydraulic cylinder at a predetermined regulation characteristic is gradually reduced as the pump feed pressure increases on the plus side (15:1) of the hydraulic cylinder a hydraulic system (11, 12) having a motor-driven pump, a tank for a fluid as well as a control valve with which a fluid flow set under pump feed pressure can be selectively supplied to a plus side (15:1) of the hydraulic cylinder via a first pipe connected to same, respectively a minus side (15:2) via a second pipe connected to same, characterised in that the hydraulic system (11, 12) has a third pipe, which results in a regenerative fluid flow from the minus side (15:2) to the plus side (15:1) of the hydraulic cylinder, a pressure-sensing valve means, which is arranged to the second pipe, and which valve means is configured to; drive in a first operating condition, wherein the valve means is closed and the fluid flow from the minus side (15:2) to the plus side (15:1) of the hydraulic cylinder is directed via said third pipe, receive a pressure indication, indicating a pump feed pressure on the hydraulic cylinder's plus side (15:1), determine whether the pump feed pressure exceeds a first operating condition threshold value, and, if so, drive in a second operating condition, wherein the valve means is open and fluid flow from the hydraulic cylinder's minus side (15:2) is directed to the tank 16 wherein the valve means is configured to; determine whether the pump feed pressure on the hydraulic cylinder's plus side (15:1) exceeds the first operating condition threshold value, but is below a second operating condition threshold value, and, if so, vary the degree of opening in an intermediate transition area, wherein the fluid flow from the minus side (15:2) to the plus side (15:1) of the hydraulic cylinder at a predetermined regulation characteristic is gradually reduced as the pump feed pressure increases on the plus side (15:1) of the hydraulic cylinder drive in a first operating condition, wherein the valve means is closed and the fluid flow from the minus side (15:2) to the plus side (15:1) of the hydraulic cylinder is directed via said third pipe, receive a pressure indication, indicating a pump feed pressure on the hydraulic cylinder's plus side (15:1), determine whether the pump feed pressure exceeds a first operating condition threshold value, and, if so, drive in a second operating condition, wherein the valve means is open and fluid flow from the hydraulic cylinder's minus side (15:2) is directed to the tank 16 wherein the valve means is configured to; determine whether the pump feed pressure on the hydraulic cylinder's plus side (15:1) exceeds the first operating condition threshold value, but is below a second operating condition threshold value, and, if so, vary the degree of opening in an intermediate transition area, wherein the fluid flow from the minus side (15:2) to the plus side (15:1) of the hydraulic cylinder at a predetermined regulation characteristic is gradually reduced as the pump feed pressure increases on the plus side (15:1) of the hydraulic cylinder