Which articulated trailer is most at risk of jack-knifing? Mark one answer
A A laden fuel tanker
B A loaded flat-bed trailer
C A loaded high-sided trailer
D An unladen trailer
Answer:D
Which articulated trailer is most at risk of jack-knifing? Mark one answer
A A laden fuel tanker B A loaded flat-bed trailer C A loaded high-sided trailer D An unladen trailer
Explanation: Jack-knifing occurs when the tractor unit is pushed by the semi-trailer pivoting around the coupling (fifth wheel). This is more likely to occur with an unladen vehicle.