GB Class 2
The trams remained in service until 1973 when they were replaced by the TS Class 7 trams , following the merger of Graakalbanen into Trondheim Trafikkselskap , and the subsequent reorganizing of routes , so the Gråkallen Line was operated onwards along the Lademoen Line . 
<triplet> TS Class 7 <subj> Trondheim Trafikkselskap <obj> operator