E. LearndmvDMV PRACTICE
Find your state Exam types Practice tests Sign in Create account ↗
Practice quizzes / IN CDL Combination Practice Questions - Indiana CDL Combination Vehicles Test Exam / Question 104174
Practice question

What should you do if you hear air escaping from a glad hand after coupling?

  1. Drive if the trailer lights work
  2. Repair or reseal the connection before driving
  3. Disconnect the service line only
  4. Use the hand valve as a backup

Answer: B — Repair or reseal the connection before driving

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

Practice more: IN CDL Combination Practice Questions - Indiana 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.