Question A double or triple: Answers Is usually able to be driven faster than a straight truck. Is usually less stable than other smaller commercial vehicles. Is always easier to drive than other commercial vehicles. Does not need a special endorsement to be driven. Explanation Double and triple trailers are less stable than single commercial vehicles and are more likely to roll over when being driven. To prevent rollovers, doubles and triples must be driven very smoothly and gently. Take a FREE Practice Test Now