I found [link=http://www.postvagnen.com/forum/index.php?mode=thread&id=617853]theese pictures[/link] of one of the control trailers - and an unrebuilt trailer - being used with a Z4p diesel tractor as a push´n´pull set during the Hultsfred Music Festival. I am not sure if it is the same control trailer or a sister.

At Roslagsbanan it was never used with diesels but with electric motor cars (type X7p and X9p) as Kurt told above. The green colour replaced the typical Swedish red/brown in the 50's and 60's. Several of the preserved ex Roslagsbanan cars have been repainted in red/brown, although this is not strictly historically correct for the newest cars delivered in the early 60's and for the control trailers rebuilt in the 80's.

At last [link=http://www.postvagnen.com/forum/index.php?mode=thread&id=440766]a picture of a typical five car train on Roslagsbanan[/link] with control trailers in both ends and a motor car in the middle. Off-peak two cars were detached from one end and a three car train operated. Theese trains ceased operating in 1994.

The green UBxp (now UBzp) is No. 108. The brown one was No. 106. It was never owned by TJF and was scrapped 2005 or later. It had no seats and bad wheels and was used as an expedition for a few years. [link=http://www.jvmv2.se/forum/index.php?mode=thread&id=125992]Roslagsbanevagnar[/link].

M.v.h.
Ola