Construction machine, a particular road construction machine, such as a road paver or a road milling machine, comprising a screed and a screed control system with a controller and at least one actuator for tow point adjustment, wherein the controller is connected to a first sensor in the area of the screed and is connected to a second sensor in the area of the tow point (14 ZP), and wherein the control is configured to adjust a tow point (14 ZP) of the screed, wherein the controller comprises a first and second control loop (360, 370) wherein the first control loop varies the tow point (14 ZP) in dependence on a first sensor value and wherein the second control loop varies the tow point (14 ZP) in dependence on a second sensor value, wherein the first sensor value, measured with the first sensor, represents a distance to a ground or a reference in the area of the screed, and wherein the second sensor value, measured with the second sensor, represents a distance to a ground or a reference in the area of the tow point (14 ZP), wherein the reference in the area of the screed and the reference in the area of the tow point (14 ZP) include an already deposited layer or a ground for the layer to be deposited or a rope extending along the ground or an edge extending along the ground or a curb or a line extending along the ground, or a reference with respect to a central transmitter with respect to a total station or with respect to a projected laser plane, or wherein the reference in the area or the tow point (14 ZP) includes an already deposited layer or a ground for the layer to be deposited or a rope extending along the ground or an edge extending along the ground or a curb or a line extending along the ground or a reference with respect to a central transmitter or with respect to a total station or with respect to a projected laser plane. wherein the controller comprises a first and second control loop (360, 370) wherein the first control loop varies the tow point (14 ZP) in dependence on a first sensor value and wherein the second control loop varies the tow point (14 ZP) in dependence on a second sensor value, wherein the first sensor value, measured with the first sensor, represents a distance to a ground or a reference in the area of the screed, and wherein the second sensor value, measured with the second sensor, represents a distance to a ground or a reference in the area of the tow point (14 ZP), wherein the reference in the area of the screed and the reference in the area of the tow point (14 ZP) include an already deposited layer or a ground for the layer to be deposited or a rope extending along the ground or an edge extending along the ground or a curb or a line extending along the ground, or a reference with respect to a central transmitter with respect to a total station or with respect to a projected laser plane, or wherein the reference in the area or the tow point (14 ZP) includes an already deposited layer or a ground for the layer to be deposited or a rope extending along the ground or an edge extending along the ground or a curb or a line extending along the ground or a reference with respect to a central transmitter or with respect to a total station or with respect to a projected laser plane.