E. LearndmvDMV PRACTICE
Find your state Exam types Practice tests Sign in Create account ↗
Practice quizzes / Missouri CDL Combination Practice Questions - Missouri CDL Combination Vehicles Test Exam / Question 130952
Practice question

What should be true of air and electric lines during inspection?

  1. Tightly stretched
  2. Disconnected unless braking
  3. Properly connected, leak-free, undamaged, secured, and with slack for turns
  4. Routed under tires

Answer: C — Properly connected, leak-free, undamaged, secured, and with slack for turns

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

Practice more: Missouri CDL Combination Practice Questions - Missouri CDL Combination Vehicles 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.