Idaho CDL Knowledge Test Sample Questions
Real, Idaho-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 Idaho cdl practice test to test yourself instead of just reading the answers.
General Driving Knowledge
1. What does Idaho charge for the commercial learner's permit (CLP) itself?
Idaho charges a $29 fee for the commercial learner's permit.
Source: Idaho Commercial Driver License Manual
2. How long is an Idaho CLP valid?
An Idaho commercial learner's permit is valid for one year from the date of issuance.
Source: Idaho Commercial Driver License Manual
3. What does Idaho charge for each written CDL knowledge test attempt?
Idaho charges a $3 fee for each written knowledge test attempt, separate from the CLP and application fees.
Source: Idaho Commercial Driver License Manual
4. What does Idaho charge as a CDL application fee, separate from the CLP, test, and skills-test fees?
Idaho charges a $40 CDL application fee, on top of the separate CLP, written-test, and skills-test fees.
Source: Idaho Commercial Driver License Manual
5. How long must an Idaho CLP holder wait before taking the CDL skills test?
Idaho requires a CLP holder to wait at least 14 days after the permit is issued before taking the CDL skills test, per federal rule.
Source: Idaho Commercial Driver License Manual
6. What does Idaho charge for the CDL skills test?
Idaho charges a $70 fee for the CDL skills test, the largest single fee in the process.
Source: Idaho Commercial Driver License Manual
More Questions
7. Under federal hours-of-service rules that apply to Idaho 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: Idaho Commercial Driver License Manual