At highway speeds, doubles and triples are more likely to roll over than single combination vehicles because:
a.They weigh more than single trailers
b.They have more tires on the road
c.The rearward amplification effect and higher overall center of gravity make them less stable
d.They have stronger brakes
Explanation
Doubles and triples are more prone to rollover at highway speeds because rearward amplification magnifies any lateral movement, and the overall combination may have a higher center of gravity. Speed management and gentle steering are essential.