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CDL General Knowledge (Pennsylvania)

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

CDL General Knowledge (Pennsylvania): 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 Pennsylvania 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 Pennsylvania Department of Transportation (PennDOT)'s own site, verified 2026-09-03.

Administering agency
Pennsylvania Department of Transportation (PennDOT)
CDL license fee
Aggregator estimates cite ~$90 for a 4-year CDL (some sources cite ~$150-$275 total once permit/knowledge-test/photo/endorsement fees are combined); NOT confirmed on an official PennDOT fee table in this pass -- treat as unverified
Road/skills test fee
Third-party skills testing in PA reportedly runs $150-$500 per secondary sources, since PA CDL skills tests are administered by licensed third-party examiners rather than PennDOT directly -- this is a materially different model than most other states and worth flagging, but the exact figure is not confirmed on an official source
Minimum CLP hold before road test
14 days (federal minimum; not independently re-confirmed on an official PennDOT page in this pass)
Spanish-language knowledge test
Unconfirmed

CONFLICTING, UNRESOLVED: the official pa.gov driver-manual testing page confirms PennDOT offers NON-COMMERCIAL knowledge tests in 29 languages including Spanish, 'upon request,' but this page does not explicitly state whether the CDL knowledge test specifically is included in that language list or is English-only per federal requirement. A separate secondary source (Lexology, discussing a PennDOT policy change) suggests PennDOT recently 'eliminated automatic use of translators' for driver license tests generally -- this could be relevant to CDL testing but was not confirmed against an official PennDOT/DMV.pa.gov source in this pass. Given Pennsylvania was named in a 2024 Illinois SOS press release as one of the 20+ states then offering Spanish CDL testing, and given the live federal ELP crackdown plus possible PennDOT translator-policy changes, this field needs direct follow-up with PennDOT before publishing either way.

5 real sample questions
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
Under 49 CFR 392.7, a driver may not operate a commercial motor vehicle unless satisfied that certain systems are in good working order. Which of the following is included in that pre-trip requirement?
A. The radio and cab air-conditioning system
B. Service brakes, trailer brake connections, parking brake, tires, lights, and mirrors
C. The cruise control set speed
D. The fuel economy displayed on the dashboard computer
Source: 49 CFR 392.7
Same exam, other states
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Frequently asked questions

How many questions are on the CertQuestUSA CDL General Knowledge (Pennsylvania) 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 (Pennsylvania) 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 (Pennsylvania) 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 (Pennsylvania)?
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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