Complex sentence: These double-articulated trams are bi-directional with driver cabs at either end and doors on both sides, they can therefore operate on the Ullevåll line to Rikshospitalet which does not have a turning circle at the end of the line.
Split into simpler sentences: These double-articulated trams can go backwards as well as forwards due to the presence of driver cabs at either end and doors on both sides. They can therefore operate on the Ullevål line to Rikshospitalet which does not have a turning circle at the end of the line.