Odd working. Is it a test train?

[YorkshireBear]

http://www.realtimetrains.co.uk/train/P92156/2013/12/03/advanced

http://www.realtimetrains.co.uk/train/P92157/2013/12/03/advanced

Diesel Loco max speed 90mph trailing load 245 tonnes.

Anyone know what this is?

 

[Bigfoot]

RHTT I am guessing.

 

[Boothby97]

They could be test trains, as it should work this http://www.realtimetrains.co.uk/train/P92155/2013/12/02/advanced before, which visits my local station very late, but never runs.
On the other hand they may be 'Weedkiller' workings.

 

[NLC1072]

They could be test trains, as it should work this http://www.realtimetrains.co.uk/train/P92155/2013/12/02/advanced before, which visits my local station very late, but never runs.
On the other hand they may be 'Weedkiller' workings.

Could also be a railhead cleaning unit they're using during the leaf fall season.

 

[GB]

RHTT I am guessing.

Don't think conventional RHTTs are permitted to run at 90mph. Not sure about MPV's tho.

 

[eastwestdivide]

Whatever it was, it wasn't. Doesn't appear to have run.
It certainly isn't the normal schedule for the Yorkshire RHTTs, and in the first journey, there's an odd note under the Hull call "Operated by Northern (NT) from here."

 

[Boothby97]

Whatever it was, it wasn't. Doesn't appear to have run.

Well it says (on the Doncaster LIP-Hull) "Runs TO between 11/12/2012 to 03/12/2013", so the path has been in for every Tuesday