CLP Cheat Sheet 2026

The 30 highest-yield CLP facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. What does the term 'dunnage' refer to in cargo loading? → Loose material used to support and protect cargo
2. Which of the following is considered a 'serious traffic violation' that can lead to CDL disqualification? → Speeding 15+ mph over the limit in a CMV
3. When merging onto a highway, a CMV driver should: → Match the speed of highway traffic before merging
4. Which of the following is NOT typically a requirement during the supervised driving phase of obtaining a CLP? → Passing a road skills test before the supervised driving
5. A CLP holder is restricted from operating a CMV in which of the following situations? → Transporting passengers for hire without a P endorsement
6. When making a right turn in a large commercial vehicle, what is the proper technique to prevent the trailer from tracking over the curb? → Swing wide to the left before initiating the turn.
7. Which federal regulation primarily governs the restrictions placed on CLP holders? → 49 CFR Part 383
8. A CLP holder who fails a required skills test must wait how long before retesting in most states? → 14 days
9. Why is it dangerous to disconnect the air lines before uncoupling the fifth wheel? → The trailer spring brakes may not apply, allowing the unsupported trailer to roll freely
10. You are loading a trailer with cargo of various weights. To ensure the vehicle is stable and handles correctly, how should the cargo be placed? → Place the heaviest items as low as possible and centered over the axles.
11. Under FMCSA rules, which of these disqualifies someone from holding a CLP? → Being under 21 years old for interstate commerce
12. How long is a CLP valid before it must be renewed or upgraded to a CDL? → 1 year
13. What does the term 'vehicle tracking' refer to in CDL driving? → How closely the rear wheels follow the path of the front wheels
14. Can a person hold a CLP in one state while also holding a CDL in another state? → No, federal law prohibits holding commercial licenses in more than one state
15. A CMV traveling at 65 mph has how much more stopping distance than the same truck traveling at 45 mph? → About twice the stopping distance
16. What is the primary purpose of the Commercial Driver's License Information System (CDLIS)? → To ensure each driver has only one CDL or CLP nationwide
17. What must a CLP holder do if they move to a different state during the permit period? → Transfer the CLP to the new state of domicile and meet that state's requirements
18. When is it acceptable to exceed the posted speed limit in a commercial vehicle? → It is never acceptable to exceed the posted speed limit
19. On a paper log, duty status changes must be recorded to the nearest increment of how many minutes? → 15 minutes
20. What is the minimum age requirement to obtain a CDL and operate a commercial motor vehicle in interstate commerce? → 21 years old
21. In a team driving operation, how must the co-driver's name be recorded? → On both drivers' daily logs
22. If a CLP applicant wants to test for both the Passenger (P) and School Bus (S) endorsements, what is required? → They must pass separate knowledge tests for both endorsements
23. During an engine compartment check, you notice the oil level is between the ADD and FULL marks. What should you do? → This is acceptable — drive the vehicle
24. Under CDL regulations, a driver must notify their state licensing authority within how many days of a traffic conviction in another state? → 30 days
25. A new CLP holder's supervisor holds a Class B CDL. Which vehicle may the CLP holder legally practice driving under this supervision? → A Class B single-unit vehicle or lighter
26. What is the primary, approved use of the trailer hand valve (also known as the trolley valve or Johnson bar)? → To test the trailer service brakes.
27. Which statement about driving in heavy rain is correct? → Reduce speed and increase following distance to account for reduced traction
28. When making a right turn in a large commercial vehicle, why should you position the truck slightly left before turning? → To allow the rear wheels enough room to complete the turn without hitting the curb
29. When should a driver use the jake brake (engine compression brake)? → On long downgrades to control speed without overheating service brakes
30. What is the correct way to manage speed on a long downhill grade? → Select a low gear before the descent and use controlled brake applications