ETS:
What’s a ‘Split Coupling’?
Coupling up…
But putting all the airlines on before you fully reverse onto the trailer. If you have a really close coupled fridge trailer, it’s just easier to do this rather than try and squeeze into a tight gap once you’ve coupled. Obviously this relies on the trailer brake being engaged which, 9 times out of 10 it is and not forgetting the handbrake in the unit which usually where things go pear shaped.