Kentucky CDL Knowledge Test Sample Questions
Real, Kentucky-specific sample questions from our practice question bank, with the correct answer, a full explanation, and a source reference for each. See our national sample questions for topics that apply to every state, or take the full Kentucky cdl practice test to test yourself instead of just reading the answers.
General Driving Knowledge
1. What is the fee for a Kentucky commercial learner's permit (CLP)?
Kentucky charges $11 for a standard commercial learner's permit ($14 for a REAL ID version), one of the lowest CLP fees nationally.
Source: Kentucky Commercial Driver License Manual
2. How long is a Kentucky CLP valid?
A Kentucky commercial learner's permit is valid for 180 days, and knowledge test scores remain good for that entire period.
Source: Kentucky Commercial Driver License Manual
3. If a Kentucky applicant fails the CDL knowledge test, how long must they wait to retake it?
A Kentucky applicant who fails the CDL knowledge test must wait 24 hours before retaking it, and may retake it as many times as needed within the CLP's validity period.
Source: Kentucky Commercial Driver License Manual
4. What happens to a Kentucky commercial driver who tests between 0.01% and 0.039% BAC?
Kentucky places a commercial driver testing between 0.01% and 0.039% BAC out of service for 24 hours; testing at 0.04% or above brings a one-year disqualification.
Source: Kentucky Commercial Driver License Manual
5. What must a Kentucky CDL applicant complete before applying for their first commercial driver's license?
Since February 2022, Kentucky requires new CDL applicants to complete entry-level driver training (ELDT) through an authorized provider before applying for their first CDL.
Source: Kentucky Commercial Driver License Manual
6. Which agency administers a Kentucky CDL applicant's written and vision tests?
Kentucky State Police administers the written and vision tests for a CDL applicant; the Regional Office handles self-certification and issuance instead.
Source: Kentucky Commercial Driver License Manual
More Questions
7. Under federal hours-of-service rules that apply to Kentucky CDL holders, how many hours of driving are allowed after 10 consecutive hours off duty?
Federal hours-of-service rules allow up to 11 hours of driving after 10 consecutive hours off duty, within a 14-hour on-duty window.
Source: Kentucky Commercial Driver License Manual