A Network Rail - Windhoff Rail Multiple Purpose Vehicle (MPV) in Rail Head Treatment Train (RHTT) mode.
This is a Hi Res 2048 x 2048 cabview from photo's by Richard Boddy, sounds by TSC/TSS and Martin Corbett.
Controls are as normal for a UK Open Bve train and includes a Sandite laying sound on the - button on the number pad side of the keyboard.