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CDL General Knowledge (Connecticut)

First published: September 3, 2026Last verified: September 3, 2026Reviewed by the CertQuestUSA team
TL;DR

CDL General Knowledge (Connecticut): a 124-question practice bank for the real CDL Permit & Endorsement Exams standard, 2 full papers of 50 questions each with no repeats, every question citing the real regulation it comes from.

Where these questions come from

Every question in this bank cites a real source -- primarily FMCSA CDL Manual (77%) and 49 CFR (23%) of this exam's citations.

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2
full papers, no repeats
50
questions per paper
124
questions in the bank
What this exam covers
Real Connecticut CDL requirements

The knowledge tested here is federal (FMCSA) and identical nationwide -- what varies by state is who administers it and under what terms. Researched directly from Connecticut Department of Motor Vehicles (CT DMV)'s own site, verified 2026-09-03.

Administering agency
Connecticut Department of Motor Vehicles (CT DMV)
CLP (permit) fee
$20 (CLP issuance, after passing required tests)
CDL license fee
$70 (reported by secondary sources; not independently confirmed on the official CLP page fetched, which covers CLP-stage fees only)
Road/skills test fee
Skills test: $30; General knowledge test: $16; Air brakes endorsement: $5; Combination endorsement: $5; other endorsements: $5 each — all confirmed directly on the official CT.gov CLP page
Minimum CLP hold before road test
14
CLP validity
Valid for one year from date of issuance; if a CDL is not obtained within that year, all required tests must be retaken (confirmed directly on official CT.gov page)
Retake wait after a failed knowledge test
No fixed waiting period specified on the official page; a failed knowledge test requires scheduling a new appointment, submitting a fresh application (Form R-229a), and paying the test fee again
Spanish-language knowledge test
Available

Multiple corroborating sources indicate Connecticut's CDL knowledge test is offered in English and Spanish only (unlike the general, non-commercial driver's license knowledge test, which CT.gov's own LEP FAQ lists as available in about 11 languages). I could not find an official CT.gov page stating this in so many words for the CDL-specific test — the DMV's LEP-FAQs.pdf does not break out CDL separately — so treat as medium confidence. No evidence found of any 2025/2026 change to Connecticut's CDL language policy.

5 real sample questions
Under the 30-minute break requirement in 49 CFR 395.3, a driver must take a break after accumulating how many cumulative hours of driving time?
A. 4 hours
B. 6 hours
C. 8 hours
D. 10 hours
Source: 49 CFR 395.3
What is the most important reason for performing a pre-trip inspection before every trip?
A. To satisfy your dispatcher that the truck left on time
B. To find problems that could cause a crash or breakdown before they happen on the road
C. To reduce the number of miles logged for the day
D. To avoid having to fill out any paperwork later
Source: FMCSA CDL Manual §2.1.1
A roadside inspector determines that a commercial motor vehicle has a safety defect serious enough to be an immediate hazard. What is the inspector authorized to do under 49 CFR 396.9?
A. Issue a warning only, since only the motor carrier can pull a vehicle from service
B. Declare the vehicle "out of service" until the defect is corrected
C. Impound the vehicle permanently
D. Fine the driver but allow the vehicle to continue to the next scheduled stop
Source: 49 CFR 396.9
Under the federal tire tread depth standard, what is the minimum tread depth allowed in any major tread groove on a steering axle tire?
A. 1/32 inch
B. 2/32 inch
C. 4/32 inch
D. 6/32 inch
Source: 49 CFR 393.75
What is the minimum tread depth required on non-steering axle tires of a commercial motor vehicle?
A. 1/32 inch
B. 2/32 inch
C. 3/32 inch
D. 4/32 inch
Source: 49 CFR 393.75
Same exam, other states
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Frequently asked questions

How many questions are on the CertQuestUSA CDL General Knowledge (Connecticut) practice test?
124 questions total, split into 2 full papers of 50 each with no repeats across papers.
What topics does the CDL General Knowledge (Connecticut) test cover?
13 domains, with the heaviest weight on Vehicle Inspection (14%), Basic Control & Shifting (10%), and Emergency Maneuvers & Skid Control (10%).
Where do CertQuestUSA's CDL General Knowledge (Connecticut) questions come from?
Primarily FMCSA CDL Manual (77%) and 49 CFR (23%) of this bank's citations -- computed directly from this exam's own question sources, not a generic description.
Is there a free diagnostic for CDL General Knowledge (Connecticut)?
Yes -- 10 real questions across the exam's domains, no sign-up required, with a domain-by-domain breakdown at the end.
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