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Free DER Training Practice Test Online

Official exam: DER Training (Designated Employer Representative)

Take a free DER Training practice test online: 10 questions, no sign-up, scored by topic. The full 34-question bank and the timed simulator are $14.99 for 30 days.

First published: September 2, 2026Bank updated: September 2, 2026Published by CertQuestUSA · review process
TL;DR

DER Training (Designated Employer Representative): a 34-question practice bank for the real DOT / FMCSA Carrier Compliance standard, 1 full paper of 20 questions each with no repeats, every question written to the regulation it comes from.

Where these questions come from

Every question in this bank cites a source -- primarily 49 CFR (100%) of this exam's citations.

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1
full paper
20
questions per paper
34
questions in the bank
What this exam covers
5 real sample questions
Under 49 CFR 40.3, what is a Designated Employer Representative (DER)?
A. An employee authorized by the employer to take immediate action to remove employees from safety-sensitive duties and make required decisions in the testing and evaluation process
B. Any outside consultant an employer hires to run its drug testing program
C. The Medical Review Officer assigned to the employer’s account
D. A collector at the drug testing site
Show answer and reasoning

Correct answer: A. An employee authorized by the employer to take immediate action to remove employees from safety-sensitive duties and make required decisions in the testing and evaluation process

  • B: The definition requires the DER to be an employee of the company, not an outside consultant.
  • C: The MRO is a distinct, separately defined role under Part 40, not the DER.
  • D: A specimen collector performs a different function and is not the DER.
Source: 49 CFR 40.3
Can a company hire an outside service agent to serve as its DER?
A. No, service agents cannot serve as DERs; the DER must be an employee of the company
B. Yes, as long as the service agent is licensed
C. Yes, but only for small companies with fewer than 10 employees
D. Yes, if the driver agrees to it
Show answer and reasoning

Correct answer: A. No, service agents cannot serve as DERs; the DER must be an employee of the company

  • B: Licensing does not override the express bar on service agents serving as DER.
  • C: Company size is not an exception to this rule.
  • D: Driver consent has no bearing on who may serve as DER.
Source: 49 CFR 40.3
What kind of decisions is a DER authorized to make, per 49 CFR 40.3?
A. Required decisions in the testing and evaluation processes
B. Decisions about the driver’s personal medical treatment plan
C. Decisions about the laboratory’s internal chain-of-custody procedures
D. Decisions about whether a positive test result is scientifically valid
Show answer and reasoning

Correct answer: A. Required decisions in the testing and evaluation processes

  • B: Medical treatment planning is outside the DER’s role and belongs to medical professionals.
  • C: Laboratory chain-of-custody procedure is the laboratory’s and collector’s responsibility, not the DER’s.
  • D: Determining scientific validity of a result is the MRO’s function, not the DER’s.
Source: 49 CFR 40.3
Under 382.107, from whom does a DER receive communications and test results?
A. Service agents
B. The general public
C. Only the driver’s family members
D. A random selection administrator with no employer role
Show answer and reasoning

Correct answer: A. Service agents

  • B: The general public has no role in receiving or transmitting drug testing communications.
  • C: Family members are not the source of testing communications and results.
  • D: The DER’s role is defined by receiving communications from service agents, not the reverse.
Source: 49 CFR 382.107
A trucking company wants to designate its outside consortium/third-party administrator (C/TPA) as its DER to save time. Is this permitted under 382.107?
A. No, because the DER must be an employee of the company and service agents (which include C/TPAs) cannot serve as DER
B. Yes, as long as the C/TPA agrees in writing
C. Yes, this is the preferred arrangement under FMCSA guidance
D. Yes, but only for owner-operators with a single truck
Show answer and reasoning

Correct answer: A. No, because the DER must be an employee of the company and service agents (which include C/TPAs) cannot serve as DER

  • B: A written agreement does not override the regulatory bar on service agents serving as DER.
  • C: This arrangement is expressly prohibited, not preferred.
  • D: Company size does not create an exception to the employee-only requirement.
Source: 49 CFR 382.107

Frequently asked questions

Where can I take a free DER Training practice test online?
Right here. CertQuestUSA's free DER Training practice test online is a 10-question diagnostic across the exam's domains, with no sign-up and no credit card, and shows your score by topic at the end. The full 34-question bank, with every answer explained and cited to the regulation it comes from, is $14.99 for a 30-day pass that never renews.
How many questions are on the CertQuestUSA DER Training (Designated Employer Representative) practice test?
34 questions total, split into 1 full paper of 20 each with no repeats across papers.
What topics does the DER Training (Designated Employer Representative) test cover?
4 domains, with the heaviest weight on Coordination with the Medical Review Officer (34%), Removal and Refusal Determinations (31%), and Clearinghouse Reporting Duties (19%).
Where do CertQuestUSA's DER Training (Designated Employer Representative) questions come from?
Primarily 49 CFR (100%) of this bank's citations -- computed directly from this exam's own question sources, not a generic description.
Is there a free diagnostic for DER Training (Designated Employer Representative)?
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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