NRCME DOT Practice Test Exam – Complete Questions
with All Multiple-Choice Options, Verified Correct Answers
& Detailed Explanations-Latest Update 2026/27 | Graded A+
Question 1
What minimum PaO2 level is recommended if the driver has an ABG due to a chronic
respiratory disorder? To be qualified, the driver should meet a minimum arterial blood gas
(PaO2) greater than:
A. 70 mm Hg
B. 55 mm Hg
C. 60 mm Hg
D. 65 mm Hg
Correct Answer: D
Explanation: A driver with a chronic respiratory disorder must have a PaO2 greater than 65 mm
Hg on arterial blood gas (ABG) to be qualified. This ensures adequate oxygenation for safe
operation of a commercial motor vehicle. Lower levels indicate hypoxemia that could impair
cognitive and physical function .
Question 2
A driver first perceives a whispered voice at 5 feet in his right ear and 4 feet in his left ear. All
other aspects of his physical examination are unremarkable. The examiner should:
A. Disqualify the driver because he "failed" the whispered voice test.
B. Certify the driver for 2 years.
C. Certify the driver for 1 year.
D. Require an audiometric test to determine the extent of hearing loss in his left ear.
Correct Answer: B
Explanation: The driver is qualified to drive without restriction as long as he is able to perceive
a whispered voice at 5 feet in one ear. The requirement is perception in one ear at not less than 5
feet. Passing in the right ear at 5 feet meets the standard; the left ear result is irrelevant. The
driver can be certified for 2 years .
Question 3
pg. 1
,A driver reports for an examination 6 weeks after suffering a mild heart attack and presents a
note from his cardiologist stating that he is able to return to work immediately without
restriction. Included within the note, the cardiologist provides recent testing information showing
that the driver had an ETT that showed he was able to reach 12 METs during the test. His
echocardiogram showed an ejection fraction of 65%. The examination of the driver is
unremarkable. The examiner should:
A. Certify the driver for 2 years.
B. Certify the driver for 1 year.
C. Disqualify the driver.
D. Certify the driver after completing the recommended waiting period.
Correct Answer: D
Explanation: The driver has not completed the recommended 2-month waiting period after
myocardial infarction. All other requirements for medical clearance and required testing have
been met. The driver would be certified for 1 year at the completion of the waiting period .
Question 4
A driver provides an audiometric test documenting the following: 500 Hz: 35 Right ear; 40 Left
ear. 1000 Hz: 40 Right ear; 45 Left ear. 2000 Hz: 40 Right ear; 45 Left ear. 4000 Hz: 50 Right
ear; 50 Left ear. The medical examiner should:
A. Disqualify the driver because he does not meet minimum hearing requirements to drive.
B. Certify the driver for 2 years.
C. Certify the driver for 1 year.
D. Require the driver to obtain a hearing exemption.
Correct Answer: B
Explanation: The examiner would average the results from 500 Hz, 1000 Hz, and 2000 Hz. This
average is 38.33 in the right and 43.33 in the left ear. A driver must have an average hearing loss
of less than or equal to 40 in the better ear. This does not have to be met in both ears. The driver
meets the standard and can be certified for 2 years .
Question 5
During the examination of a commercial driver, the examiner notices that the driver's peripheral
vision is 70 degrees to the left and 80 degrees to the right. The examiner should:
A. Qualify the driver for 2 years.
B. Require the driver to obtain a vision exemption because of the limitation in the driver's left
peripheral field.
C. Disqualify the driver.
pg. 2
,D. Have the driver consult with an Ophthalmologist to determine if the driver's peripheral vision
meets minimum standards.
Correct Answer: A
Explanation: A driver must exhibit a minimum peripheral vision of 70 degrees bilaterally. The
driver meets this standard with 70 degrees on the left and 80 degrees on the right. The driver can
be qualified for 2 years .
Question 6
During examination, the medical examiner notices that the driver is distant, lacks eye contact and
shows absolutely no emotional response during the exam. The examiner's best response should
be:
A. Provide the driver with a "CAGE" questionnaire to determine if he suffers from alcoholism.
B. Disqualify the driver and refer him to a mental health professional prior to consideration for
certification.
C. Certify the driver with a 1-time, 3-month certificate to determine if there is any effect on the
driver's ability to drive a CMV.
D. Require a skill performance evaluation to ascertain if the driver has any limitations with
driving.
Correct Answer: B
Explanation: The driver exhibits what may be considered a "flat affect" which is seen in
schizophrenia and in severe depression. The driver should be evaluated by a mental health expert
to make a diagnosis prior to certification .
Question 7
A driver admits to the use of marijuana for the treatment of his glaucoma, which is legal in the
State in which he lives. He provides medical documentation for the glaucoma indicating he is
able to drive a truck. He began using the marijuana about three months ago. His current medical
card has no limitations listed and is for 2 years. His certification examination is within normal
limits. The medical examiner should:
A. Disqualify the driver.
B. Perform a urine drug collection and provide the release from the testing provider.
C. Certify the driver for 1 year.
D. Certify the driver for 2 years.
Correct Answer: A
Explanation: Use of marijuana is prohibited by Federal law while driving a CMV and trumps
State law in this matter. The driver must be disqualified regardless of state legality .
pg. 3
, Question 8
A driver has a blood pressure of 136/92 mm Hg. This is:
A. Within normal limits and would not affect the driver's certification.
B. Stage 1 Hypertension.
C. Stage 2 Hypertension.
D. Stage 3 Hypertension.
Correct Answer: B
Explanation: Stage 1 Hypertension is defined as 130-139/80-89 mm Hg (or 140-159/90-99 per
older guidelines). The diastolic of 92 mm Hg places this driver in Stage 1 Hypertension .
Question 9
A driver is taking Celexa for the treatment of what he calls a "mild depression." He reports he
has not considered or attempted suicide. The examiner should:
A. Certify only after obtaining written clearance for the depression from the treating mental
health professional.
B. Certify the driver for a period of 1 year.
C. Certify the driver for a period of 2 years.
D. Disqualify the driver until he is no longer requiring medication for the treatment of
depression.
Correct Answer: A
Explanation: Medical clearance is recommended for all mental health disorders. Celexa is an
SSRI (second-generation antidepressant) and is acceptable, but written clearance from the
treating mental health professional should be obtained .
Question 10
For a driver with insulin-treated diabetes mellitus, the medical examiner can only accept Form
MCSA-5870 if it has been properly completed within the last:
A. 25 days.
B. 30 days.
C. 45 days.
D. 60 days.
Correct Answer: C
Explanation: The medical examiner must receive the form and begin the medical examination
no later than 45 days after the date signed on the form; however, the medical certification
pg. 4
with All Multiple-Choice Options, Verified Correct Answers
& Detailed Explanations-Latest Update 2026/27 | Graded A+
Question 1
What minimum PaO2 level is recommended if the driver has an ABG due to a chronic
respiratory disorder? To be qualified, the driver should meet a minimum arterial blood gas
(PaO2) greater than:
A. 70 mm Hg
B. 55 mm Hg
C. 60 mm Hg
D. 65 mm Hg
Correct Answer: D
Explanation: A driver with a chronic respiratory disorder must have a PaO2 greater than 65 mm
Hg on arterial blood gas (ABG) to be qualified. This ensures adequate oxygenation for safe
operation of a commercial motor vehicle. Lower levels indicate hypoxemia that could impair
cognitive and physical function .
Question 2
A driver first perceives a whispered voice at 5 feet in his right ear and 4 feet in his left ear. All
other aspects of his physical examination are unremarkable. The examiner should:
A. Disqualify the driver because he "failed" the whispered voice test.
B. Certify the driver for 2 years.
C. Certify the driver for 1 year.
D. Require an audiometric test to determine the extent of hearing loss in his left ear.
Correct Answer: B
Explanation: The driver is qualified to drive without restriction as long as he is able to perceive
a whispered voice at 5 feet in one ear. The requirement is perception in one ear at not less than 5
feet. Passing in the right ear at 5 feet meets the standard; the left ear result is irrelevant. The
driver can be certified for 2 years .
Question 3
pg. 1
,A driver reports for an examination 6 weeks after suffering a mild heart attack and presents a
note from his cardiologist stating that he is able to return to work immediately without
restriction. Included within the note, the cardiologist provides recent testing information showing
that the driver had an ETT that showed he was able to reach 12 METs during the test. His
echocardiogram showed an ejection fraction of 65%. The examination of the driver is
unremarkable. The examiner should:
A. Certify the driver for 2 years.
B. Certify the driver for 1 year.
C. Disqualify the driver.
D. Certify the driver after completing the recommended waiting period.
Correct Answer: D
Explanation: The driver has not completed the recommended 2-month waiting period after
myocardial infarction. All other requirements for medical clearance and required testing have
been met. The driver would be certified for 1 year at the completion of the waiting period .
Question 4
A driver provides an audiometric test documenting the following: 500 Hz: 35 Right ear; 40 Left
ear. 1000 Hz: 40 Right ear; 45 Left ear. 2000 Hz: 40 Right ear; 45 Left ear. 4000 Hz: 50 Right
ear; 50 Left ear. The medical examiner should:
A. Disqualify the driver because he does not meet minimum hearing requirements to drive.
B. Certify the driver for 2 years.
C. Certify the driver for 1 year.
D. Require the driver to obtain a hearing exemption.
Correct Answer: B
Explanation: The examiner would average the results from 500 Hz, 1000 Hz, and 2000 Hz. This
average is 38.33 in the right and 43.33 in the left ear. A driver must have an average hearing loss
of less than or equal to 40 in the better ear. This does not have to be met in both ears. The driver
meets the standard and can be certified for 2 years .
Question 5
During the examination of a commercial driver, the examiner notices that the driver's peripheral
vision is 70 degrees to the left and 80 degrees to the right. The examiner should:
A. Qualify the driver for 2 years.
B. Require the driver to obtain a vision exemption because of the limitation in the driver's left
peripheral field.
C. Disqualify the driver.
pg. 2
,D. Have the driver consult with an Ophthalmologist to determine if the driver's peripheral vision
meets minimum standards.
Correct Answer: A
Explanation: A driver must exhibit a minimum peripheral vision of 70 degrees bilaterally. The
driver meets this standard with 70 degrees on the left and 80 degrees on the right. The driver can
be qualified for 2 years .
Question 6
During examination, the medical examiner notices that the driver is distant, lacks eye contact and
shows absolutely no emotional response during the exam. The examiner's best response should
be:
A. Provide the driver with a "CAGE" questionnaire to determine if he suffers from alcoholism.
B. Disqualify the driver and refer him to a mental health professional prior to consideration for
certification.
C. Certify the driver with a 1-time, 3-month certificate to determine if there is any effect on the
driver's ability to drive a CMV.
D. Require a skill performance evaluation to ascertain if the driver has any limitations with
driving.
Correct Answer: B
Explanation: The driver exhibits what may be considered a "flat affect" which is seen in
schizophrenia and in severe depression. The driver should be evaluated by a mental health expert
to make a diagnosis prior to certification .
Question 7
A driver admits to the use of marijuana for the treatment of his glaucoma, which is legal in the
State in which he lives. He provides medical documentation for the glaucoma indicating he is
able to drive a truck. He began using the marijuana about three months ago. His current medical
card has no limitations listed and is for 2 years. His certification examination is within normal
limits. The medical examiner should:
A. Disqualify the driver.
B. Perform a urine drug collection and provide the release from the testing provider.
C. Certify the driver for 1 year.
D. Certify the driver for 2 years.
Correct Answer: A
Explanation: Use of marijuana is prohibited by Federal law while driving a CMV and trumps
State law in this matter. The driver must be disqualified regardless of state legality .
pg. 3
, Question 8
A driver has a blood pressure of 136/92 mm Hg. This is:
A. Within normal limits and would not affect the driver's certification.
B. Stage 1 Hypertension.
C. Stage 2 Hypertension.
D. Stage 3 Hypertension.
Correct Answer: B
Explanation: Stage 1 Hypertension is defined as 130-139/80-89 mm Hg (or 140-159/90-99 per
older guidelines). The diastolic of 92 mm Hg places this driver in Stage 1 Hypertension .
Question 9
A driver is taking Celexa for the treatment of what he calls a "mild depression." He reports he
has not considered or attempted suicide. The examiner should:
A. Certify only after obtaining written clearance for the depression from the treating mental
health professional.
B. Certify the driver for a period of 1 year.
C. Certify the driver for a period of 2 years.
D. Disqualify the driver until he is no longer requiring medication for the treatment of
depression.
Correct Answer: A
Explanation: Medical clearance is recommended for all mental health disorders. Celexa is an
SSRI (second-generation antidepressant) and is acceptable, but written clearance from the
treating mental health professional should be obtained .
Question 10
For a driver with insulin-treated diabetes mellitus, the medical examiner can only accept Form
MCSA-5870 if it has been properly completed within the last:
A. 25 days.
B. 30 days.
C. 45 days.
D. 60 days.
Correct Answer: C
Explanation: The medical examiner must receive the form and begin the medical examination
no later than 45 days after the date signed on the form; however, the medical certification
pg. 4
