 Occasional long-distance trains still stopped at the regional station, since the long-distance station was closed overnight.Since the annual timetable change in December 2010, the long-distance station is also open at night, so no more scheduled long-distance trains stop at the regional station.In the late 1980s, it was planned, as part of the construction of the airport's eastern terminal (Terminal 2) and the Cologne–Frankfurt high-speed line, to build a fourth (long-distance) platform track and to upgrade the rail infrastructure, including building a tunnel to connect with the Mannheim–Frankfurt railway towards Zeppelinheim.