Front | |
All are equally likely to turn over | |
Rear | |
Middle |
The coupling surface of the trailer is just below the middle of the tractor fifth wheel | |
The trailer dolly wheels are just barely off the ground when fully extended | |
The coupling surface of the trailer is just above the middle of the tractor fifth wheel | |
The kingpin is just below the middle of the tractor fifth wheel |
The entire air system is above 120 psi and the warning buzzer has stopped | |
The entire air system is above 120 psi | |
The entire air system is above 60 psi and the warning buzzer has stopped | |
The warning buzzer has stopped |