Well boss…
msn.com/en-gb/cars/news/tra … d=msedgntp
This trailer had no ‘breaks’ according to the accompanying text.
That’s why you’re always supposed to use the wheel chock/s usually stowed under the trailer when parking a drawbar and make sure it’s put under the rear fixed axles not the front bogie for obvious reasons. 
yourhavingalarf:
Well boss…msn.com/en-gb/cars/news/tra … d=msedgntp
This trailer had no ‘breaks’ according to the accompanying text.
WTF, don’t you have spring brakes?
Star down under.:
yourhavingalarf:
Well boss…msn.com/en-gb/cars/news/tra … d=msedgntp
This trailer had no ‘breaks’ according to the accompanying text.
WTF, don’t you have spring brakes?
Yeh we do…
In the UK (I can only assume similar sytems over in Europe where this is filmed exist), we have the handbrake brake button in red and shunt button in blue on the trailer chassis. The shunt button will be spring loaded to keep it from being pulled out permanently.
The driver has possibly been nosing the trailer in somewhere tight. It’s a technique that makes a really tight reverse a great deal easier. Obviously to do this, you need the brakes off. In the old days, I’d just drain all the air from the tanks but nowadays with spring brakes, you have to un-screw the shunt button and take the spring off to move it.
Thanks for that explanation YHL. We occasionally push roadtrain dollies, with or without trailers, but most prime movers have air fittings on the front.
Some trailers here have a yard release button but most don’t. As soon as the air supply is disconnected, the brakes are applied.