Network Rail New Measurement Train (NMT), often nicknamed the "Flying Banana" due to its distinctive yellow livery. This specialised train assesses the condition of railway tracks across the UK, helping engineers identify faults and determine where maintenance is needed. It is a converted InterCity 125, typically consisting of two Class 43 power cars and several Mark 3 carriages. The NMT is equipped with advanced systems, including high-tech measurement equipment, track scanners, and high-resolution cameras, to collect comprehensive data on track condition.