← CDL Vehicle Inspection - General Knowledge Flashcards

Free CDL Vehicle Inspection - General Knowledge Flashcards Practice Test (2026)

50 questions · 60 min · 80% to pass

50 Questions · 60 Minutes · 80% to Pass

Question 1 of 5

Sample Questions

Question 1

What is the correct tire tread depth requirement for front tires on a commercial vehicle?

Answer: Front tires must have at least 4/32 of an inch of tread depth.

Question 2

During the engine compartment phase of a pre-trip, a driver notices a slow seep of power steering fluid from a hose connection. The fluid level remains within the acceptable range. What is the correct action?

Answer: Document the leak in the DVIR as a defect. A slow seep may permit departure depending on severity, but any fluid leak must be recorded. If the leak worsens to an active drip or stream, it becomes an out-of-service condition requiring repair before operation.

Question 3

When inspecting the engine compartment, which fluid levels must a driver check?

Answer: Engine oil level, coolant level, and power steering fluid level must all be checked.

Question 4

A driver makes three local runs in the same vehicle and returns to the home terminal after each run without handing the vehicle off to another driver. When is a DVIR required under FMCSA Part 396.11?

Answer: One DVIR at the end of the last run for that day. When the same driver operates the same vehicle on multiple trips with no handoff, a single daily report satisfies the federal regulation.

Question 5

A motor carrier tells a CDL driver the truck was serviced at a certified shop three hours ago and no pre-trip inspection is needed. Under 49 CFR 392.7, what must the driver do?

Answer: The driver must still perform a full pre-trip inspection. Federal regulations make the driver responsible for confirming the vehicle is safe to operate — this obligation cannot be waived by the carrier regardless of how recently the vehicle was serviced.