You will drive a nonexempt 40,000-pound combination with a trailer rated at 14,000 pounds. Which base CDL class covers this combination?
Correct answer: Class A.
A combination at 26,001 pounds or more falls in Class A when the towed unit exceeds 10,000 pounds. Required endorsements and restrictions still matter.
Source: Service Oklahoma, CDL classes - Class A; current official source reviewed September 29, 2026. ↗
A nonexempt straight truck has a GVWR of 30,000 pounds and does not tow a trailer. What is the minimum base CDL class for its weight?
Correct answer: Class B.
Class B covers a single vehicle of 26,001 pounds or more. Intrastate operation does not by itself remove the CDL requirement.
Source: Service Oklahoma, CDL classes - Class B; current official source reviewed September 29, 2026. ↗
A nonexempt bus has a GVWR of 24,000 pounds and is designed for 18 people including its driver. It is nearly empty today. Which licensing conclusion is correct?
Correct answer: It falls within CDL Class C and requires the passenger endorsement.
For this below-Class-B bus, the designed seating capacity—not today's passenger count—triggers Class C passenger licensing.
Source: Service Oklahoma, CDL classes - Class C; current official source reviewed September 29, 2026. Cross-check: Passenger endorsement, https://oklahoma.gov/service/all-pages/endorsements-and-restrictions.html. ↗
A nonexempt delivery truck below 26,001 pounds carries a load requiring hazardous-material placards. What is the appropriate licensing conclusion?
Correct answer: Its low weight does not exempt it; Class C and the required hazardous-material endorsement apply.
Required placarding can trigger Class C even when the vehicle is below the weight threshold for Class B. The scenario excludes specific exemptions.
Source: Service Oklahoma, CDL classes - Class C; current official source reviewed September 29, 2026. Cross-check: Hazardous Materials endorsement, https://oklahoma.gov/service/all-pages/endorsements-and-restrictions.html. ↗
A 19-year-old Oklahoma commercial driver has a K restriction and is offered a trip across the state line. What does that restriction mean?
Correct answer: The driver's commercial operation is restricted to intrastate driving.
Oklahoma issues the K intrastate restriction to commercial drivers under 21. A higher vehicle class or an empty trailer does not remove that restriction.
Source: Service Oklahoma, B.01 CLP Issuance, effective March 14, 2025, Eligibility, printed 3 / physical 4; current official source reviewed September 29, 2026. Cross-check: K restriction, https://oklahoma.gov/service/all-pages/endorsements-and-restrictions.html. ↗
You obtained an Oklahoma CLP five days ago and have completed the required training. Can you take the ordinary commercial skills test now?
Correct answer: No; hold the CLP for 14 full days, then test on the 15th day.
Training completion and the CLP holding period are separate requirements. Service Oklahoma specifies 14 full days and eligibility to test on day 15.
Source: Service Oklahoma, Get your Commercial Learner Permit (CLP) - 14 full days; testing on day 15; current official source reviewed September 29, 2026. ↗
An applicant has never held a driver license and wants an Oklahoma CLP. Which first step does Service Oklahoma require?
Correct answer: Obtain a valid Oklahoma Class D driver license before applying for the CLP.
The first-time CDL process requires a valid Oklahoma Class D license before the commercial learner permit. Commercial training does not replace that starting qualification.
Source: Service Oklahoma, Prepare and bring the following to your appointment - valid Oklahoma Class D driver license; current official source reviewed September 29, 2026. ↗
A 19-year-old Oklahoma CLP holder wants to practice in a Class A combination. A 22-year-old friend has only a Class D car license. Can that friend be the required commercial supervisor?
Correct answer: No; the supervisor must be at least 21 and hold a valid CDL for the vehicle and its required endorsements.
Oklahoma's CLP eligibility guidance requires a supervisor at least 21 with the appropriate commercial class and endorsements. Age alone is not enough.
Source: Service Oklahoma, B.01 CLP Issuance, effective March 14, 2025, Eligibility, printed 3 / physical 4; current official source reviewed September 29, 2026. ↗
You have an Oklahoma CLP with passenger and school-bus endorsements. May you use a practice drive to carry the regular school route's children?
Correct answer: No; the CLP is not authority to transport the regular passenger or school-bus load.
A P or S CLP does not authorize regular passenger service. The listed exceptions concern such people as authorized examiners, inspectors, trainees, and the accompanying qualified CDL holder—not the regular school route's children.
Source: Service Oklahoma, FAQs - CLP passenger restrictions; current official source reviewed September 29, 2026. ↗
An Oklahoma CLP holder with the tank endorsement will practice with a tank vehicle. Its liquid has been drained, but hazardous residue remains. Is that permitted?
Correct answer: No; the tank must be empty and must not contain hazardous-material residue.
The CLP tank restriction requires an empty tank. A tank that carried hazardous material must also be purged of residue; draining liquid alone is insufficient.
Source: Service Oklahoma, Restrictions - X (no cargo in a CMV tank vehicle); current official source reviewed September 29, 2026. ↗
An Oklahoma applicant wants hazardous-material authority on a commercial learner permit. Can an H endorsement be added to the CLP for supervised hazardous-material hauling?
Correct answer: No; the CLP endorsements are limited to P, S, and N, with their permit restrictions.
The Oklahoma CLP issuance guidance allows passenger, school bus, and tank endorsements on a CLP, with restrictions. It does not allow an H endorsement on the learner permit.
Source: Service Oklahoma, B.01 CLP Issuance, effective March 14, 2025, Eligibility and endorsements, printed 3 / physical 4; current official source reviewed September 29, 2026. ↗
A new applicant seeks a first Class A CDL and has no applicable training exemption. Is self-study alone enough to satisfy entry-level driver training requirements?
Correct answer: No; the applicant must complete the applicable ELDT requirements through a registered training provider.
Current FMCSA guidance includes a first Class A or B CDL, a B-to-A upgrade, and first P, S, or H endorsements in ELDT scope. This question assumes no applicable exemption.
Source: FMCSA Training Provider Registry, Drivers - ELDT Applicability; first Class A or B, upgrades, first P/S/H; registered providers; current official source reviewed September 29, 2026. ↗
