The invention relates to a machine train of a preceding road milling machine 1 having a machine frame 3 carried by crawlers 3, 4 or wheels and a milling drum 10 disposed on the machine frame for milling material, and a following road paver 16, one of crawler tracks 17 or wheels supported machine frame 18, on which a reservoir 19 is arranged for material to be installed and a screed 20 for installation of material. Moreover, the invention relates to a method for operating a machine train from a preceding road milling machine and a subsequent road paver. The machine train comprising a road milling machine and a road paver is characterized in that the road milling machine 1 has a profile data determination device 33, wherein the profile data determination device 33 is designed such that during the feed of the road milling machine a sequence of height profiles describing the height of the road surface in the longitudinal direction. Data are determined. To transmit the height profile data, a data transmission device 27 is provided on the road milling machine 1 and a data reception device 27 on the road paver 16. To change the position of the screed 20, the paver 1 has a leveling device 23, which has at least one actuator 24 and a control unit 23A, which is designed such that the control unit 23A in response to a height profile record a control signal for driving the at least one Actuator 24 generated.
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