NIR MPV No. 11 passing through Botanic heading northbound. What is RHTT? RHTT stands for 'Rail Head Treatment Trains' where they send out a maintenance train such as the MPV to work on the railway lines to cleanse off any obstacles that might have fallen onto the tracks by weaponising their special ingredients known as 'waterjetting' and 'sandite'. The waterjetting helps to clean any contamination on the railhead such as leaves, salt water spray etc… this is then followed up by a layer of sandit

MPV maintenance train passes through Urmston station

NIR MPV No. 11 passes Seahill with the EX 12:50 Portadown run bound for Bangor. What is RHTT? RHTT stands for Rail Head Treatment Trains. On an annual basis, mainly around the autumn/winter season, they send out special maintenance trains such as the MPV to maintain the railway in good working condition. The MPV contains special properties to dealing with any leaf fall that may potentially have landed on the rail head. These are known as 'waterjetting' and 'sandite'. The waterjetting helps to cl