The author was involved with the fitting and monitoring of video recording equipment to the TIC and assisted on various inspection runs primarily in South Wales in the late 1990's.

It is normally loco-hauled, in the company of other vehicles for braking purposes, at the rear of a test train. Engineers from Network Rail and the infrastructure maintenance companies ride in the vehicle and can observe the track from either end through panoramic windows. The on-board instrumentation records various track parameters such as rail top, cant gradient, twist and level onto disk and paper and the vehicle has an unusual audible warning system to immediately identify those locations where parameters are exceeded. 

During 2003 it completed a major upgrade including a new diesel-powered 240v generator, re-furbished B4 bogies and a totally new monitoring and instrumentation system as part of Network Rail's continuing improvement programme. 

It is now been painted yellow and operates whenever TRU primarily (or TRC) is in dock. It has no planned programmes but is held as a spare recording vehicle. Generally it goes out with make-up vehicles to suit and either a pair of DRS 37s or RVEL 31s.