Yellow plant. The Track Relaying Machine (TRM) was built for British Railways and was previously owned by Track Engineering until purchased by CPRR in 2020. She spent most of her working life in and around Bristol before coming to Princes Risborough. She has already been in use lifting the old track from Princes Risborough to Thame Junction. As soon as funds permit, she will again be in use to lay the new track onto the Independent Line.