Check and Use Your Trailer Brake

Wheel Nut:

beefy4605:
Said it before and I’ll say it again
Suzie rails / MAVIS rails whatever you want to call them mean there is no need to be split coupling trailers , no need to be up on a catwalk between a trailer and the cab .
Split coupling is dangerous and has to many chances / oppertunities for it to go wrong. But it costs money say the companies . I say £1.5 million would fit a lot of MAVIS rails and everyone gets to go home .

Where was split coupling mentioned Mavis? failure to use the trailer brake seems to be the reason for the accident

if it wasn’t a split coupling then the pin should have been home and a handbrake on - how could the trailer roll forward ? Only a split coupling has the potential for this .