E. LearndmvDMV PRACTICE
Find your state Exam types Practice tests Sign in Create account ↗
Practice quizzes / Washington CDL Doubles and Triples Endorsement Test Practice Questions - Washington CDL Doubles and Triples Endorsement Test Exam / Question 201606
Practice question

Under 49 CFR 383.115, applicants must know proper placement of what?

  1. The radio antenna
  2. The heaviest trailer
  3. The logbook
  4. The fuel receipt

Answer: B — The heaviest trailer

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: Washington CDL Doubles and Triples Endorsement Test Practice Questions - Washington CDL Doubles and Triples Endorsement Test Exam →
Learndmv.

Thoughtful practice for the road ahead. Find permit, road signs and CDL preparation by state.

Explore

Practice by stateAll practice testsExam types

Your account

My profilePractice historyAccount security

Get started

Create accountSign inSitemap
© 2026 LearndmvIndependent practice resource · Not affiliated with any state DMV.