Doubles/Triples · Pulling Double/Triple Trailers

49 CFR 383.115(d) requires a double/triple endorsement applicant to understand the problems a longer combination creates for other motorists in traffic. Which of these does that paragraph name?

1.Slower speeds on steep grades, longer passing times, blocking other vehicles entering a freeway, splash and spray, aerodynamic buffeting, view blockages, and lateral placementCorrect answer

2.Higher fuel consumption, a higher toll classification, increased registration fees every year, and more frequent costly maintenance visits for the combination

3.Greater tire wear, more frequent brake relining, shorter service intervals, and higher insurance premiums for operating the longer combination

4.Longer loading dock times, tighter delivery scheduling windows, and more restrictive terminal yard space requirements at distribution centers

Explanation

All seven of those items are named in 49 CFR 383.115(d): slower speeds on steep grades, longer passing times, the possibility of blocking other motor vehicles entering freeways, splash and spray impacts, aerodynamic buffeting, view blockages, and lateral placement. The paragraph is framed around problems the vehicle creates for other motorists rather than problems the driver experiences, which is why every item is about how the combination affects the traffic around it. The wrong options all fail the same way: fuel consumption, toll class, tire and brake wear, and dock scheduling are operating costs and logistics concerns rather than traffic-safety effects on other road users, and none of them appears in this paragraph.

Source: 49 CFR 383.115(d)

Drill Pulling Double/Triple Trailers questions

49 CFR 383.115(d) requires a double/triple endorsement applicant to understand the problems a longer combination creates for other motorists in traffic. Which of these does that paragraph name?

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