The signalling systems in the two countries are also different. The problems were overcome by requiring all trains operating on the line to be dual voltage and have dual signalling systems, including a minority of the X2 trains operated throughout Sweden by SJ. The signalling system switches on Peberholm in Denmark, so the entire bridge uses the Swedish signalling, but Danish electrical system. The Danish signalling system is only approved for speed, while the Swedish system is approved for . The entire bridge has 200 km/h maximum speed, also the Danish part, as the only railway in Denmark.