Free DOT Reasonable Suspicion Practice Test Online

Take a free DOT Reasonable Suspicion practice test online: 10 questions, no sign-up, scored by topic. The full 90-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

DOT Reasonable Suspicion: a 90-question practice bank for the real DOT / FMCSA Carrier Compliance standard, 1 full paper of 50 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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Want the whole bank for DOT Reasonable Suspicion? One payment of $14.99 gives you 30 days of full access to this exam. It does not renew. No account needed to buy, and there is a 7-day money-back guarantee.

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Ways to pay for the full bank

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$14.99

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$19.99

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Every exam. Cancel any time.

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$143.93

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1

full paper

50

questions per paper

90

questions in the bank

What this exam covers

Alcohol Misuse Symptom Recognition16%
Controlled Substance Use Symptom Recognition20%
Referral and SAP Evaluation Process32%
Reasonable Suspicion Testing and Documentation32%

5 real sample questions

A supervisor notices a driver has bloodshot eyes and an unsteady gait before a shift. Which category of alcohol misuse indicator does this best represent?

A. Physical indicators

B. Speech indicators

C. Performance indicators

D. Behavioral indicators

Show answer and reasoning

Correct answer: A. Physical indicators

B: Speech indicators concern how the driver talks, not physical appearance.
C: Performance indicators concern job-task execution, not physical appearance.
D: Behavioral indicators concern conduct, not physical appearance.

Source: 49 CFR 382.603

A driver has an unusual chemical or unfamiliar odor on their clothing along with dilated pupils. Which indicator category does this best represent?

A. Physical indicators

B. Performance indicators

C. Speech indicators

D. Behavioral indicators

Show answer and reasoning

Correct answer: A. Physical indicators

B: Not a task-execution measure.
C: Not related to speech.
D: A physical sign, not a conduct change.

Source: 49 CFR 382.603

A normally cooperative driver becomes secretive, evasive with answers, and avoids routine check-ins with no stated reason. Which indicator category does this represent?

A. Behavioral indicators

B. Physical indicators

C. Speech indicators

D. Performance indicators

Show answer and reasoning

Correct answer: A. Behavioral indicators

B: This is conduct, not a bodily sign.
C: Not a description of speech quality alone.
D: Not a task-execution measure.

Source: 49 CFR 382.603

A driver makes an unusual number of small errors on a delivery manifest they normally complete accurately and quickly. Which indicator category does this best represent?

A. Performance indicators

B. Physical indicators

C. Speech indicators

D. Behavioral indicators

Show answer and reasoning

Correct answer: A. Performance indicators

B: Not a bodily observation.
C: Not a speech observation.
D: A task-accuracy decline is distinguished from a general conduct change.

Source: 49 CFR 382.603

A supervisor has completed the 60 minutes of alcohol misuse training and the separate 60 minutes of controlled substances training required by 382.603. What is the combined minimum training time the regulation requires?

A. 120 minutes

B. 60 minutes total, shared between both topics

C. 90 minutes

D. 180 minutes

Show answer and reasoning

Correct answer: A. 120 minutes

B: The regulation states two separate, additive 60-minute blocks, not one shared block.
C: Not the stated combined minimum.
D: Overstates the combined minimum stated by the regulation.

Source: 49 CFR 382.603

Real-world data for this exam

Heavy and Tractor-Trailer Truck Drivers: real median wageMay 2025$58,640/yr Controlled Substances/Alcoholsince 2023-01-0112,993 violations Part of the real CDL Driver career pathExplore ›

Frequently asked questions

Where can I take a free DOT Reasonable Suspicion practice test online?

Right here. CertQuestUSA's free DOT Reasonable Suspicion 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 90-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 DOT Reasonable Suspicion practice test?

90 questions total, split into 1 full paper of 50 each with no repeats across papers.

What topics does the DOT Reasonable Suspicion test cover?

4 domains, with the heaviest weight on Referral and SAP Evaluation Process (32%), Reasonable Suspicion Testing and Documentation (32%), and Controlled Substance Use Symptom Recognition (20%).

Where do CertQuestUSA's DOT Reasonable Suspicion 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 DOT Reasonable Suspicion?

Yes -- 10 real questions across the exam's domains, no sign-up required, with a domain-by-domain breakdown at the end.

Need the certificate itself, not just the practice?

This page is a practice test. Certified Training USA, our sister site, sells the DOT Reasonable Suspicion Training course with a certificate of completion.

See the course

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