They are what's used to connect the trailer to the trailer supply air lines.
Glad hands are the air brake connections on the back of a truck that you attach the air brake lines from a trailer to.
Had to look up 'susies on a lorry', as the term isn't common in the trucking industry here.... it seems to refer to the air lines and electrical cables which run from truck to trailer. The air lines, you hold up at a 90 degree angle, and bring the glad hands from the hose into contact with the glad hands on the trailer. Then you rotate counterclockwise until it secures. The electrical line is pretty straightforward - you just plug it straight in.
If the truck and trailer are not equiped with air brakes. If the truck and trailer are not comercial vehicals.
What truck.
The trailer must not be able to move when the fork truck enters and leaves the trailer. Therefore, the trailer must be restrained.
A bobtail truck is a tractor-trailer truck where the trailer has been removed, leaving only the cab or tractor portion. This type of truck is often used for short-distance or local deliveries when a full trailer is not needed.
a trailer
I want to be a truck driver. Is there special training involved to drive a truck with a flatbed trailer?
An articulated lorry is a truck and trailer - a combination involving a tractor unit and a semi-trailer, known in the United States as a semi-trailer truck.
Straight truck is a single vehicle; i.e., there isn't a trailer in tow.
The trailer must not be able to move when the fork truck enters and leaves the trailer. Therefore, the trailer must be restrained.
The action and reaction on the tow bar are forces which are internal to the system comprising truck+trailer. They therefore do not affect the motion of that system. The motion of the truck+trailer system is affected by forces acting on the system, not within the system,The fact that the action and reaction between the truck and trailer are balance explains why the trailer does not slam into the truck.
It is a hopper style trailer. It is loaded from the top And unloads from the center of the bottom thru doors or "gates". The gates are air controlled rams by electric switches inside the truck. The gates open away from the centerline of the trailer. Cup your hands with pinky fingers together then rotate your hands towards your thumbs, that would simulate the motion of the gates.