Train Information

Best-fit values for the perimeter and area of the train cross-section are not known. Values of 11 m² and 10 m² respectively were used by DTR for pre-test purposes.

The ends of the power cars and the outer surfaces of the coaches are well streamlined.

Schedule

The train ran back and forth along the twin-track line, using the west track for both northbound and southbound travel. This freed the east track for other traffic, of which there was very little. There were no occasions on which the interval between successive trains would be expected to have a significant influence on the measured data.

The speed of the train was controlled in accordance with a predetermined schedule and has been recorded digitally from the train instruments The speeds listed in the table are approximate averages over the few seconds of travel between the test shaft (the south shaft of the Emmequerung Tunnel) and the south portal of the tunnel.

Most of the runs were on Thursday 14 October 2004. In addition, there was one run in each direction on Friday 15 October. It was originally expected that there would be several runs on the Friday and further runs on the Saturday, but these were cancelled after an incident not directly related to the measurements reported in these pages.