Front | |
All are equally likely to turn over | |
Middle | |
Rear |
The kingpin is just below the middle of the tractor fifth wheel | |
The coupling surface of the trailer is just below the middle of the tractor fifth wheel | |
The coupling surface of the trailer is just above the middle of the tractor fifth wheel | |
The trailer dolly wheels are just barely off the ground when fully extended |
At the back of trailers | |
In the tractor cab | |
At the front of trailers | |
At the back of the tractor |