In a second construction phase, the section between Düren and Langerwehe is to be upgraded for speeds of up to 200 km/h. The subsequent section via Eschweiler to Aachen is to be upgraded for 140 km/h. Currently, speeds of up to 120 km/h are possible between Eschweiler and Stolberg, although sometimes only up to 110 km/h. Top speeds of 140 or 160 km/h are already permitted on the rest of the line. It should be possible for trains to pass through Düren station at 200 km/h after completion of the second stage of construction. In the final state, it should be possible to run at a minimum of 200 km/h over an almost 50 km-long section between Cologne and Langerwehe.