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DOT 2024 Study Guide Questions and Answers
How often is a driver with stage 3 hypertension recertified? a.
Every 3 months.
b. Every 6 months.
c. Every 12 months.
d. Every 2 years.
Ans: b. Every 6 months.
A driver with a history of stage 3 hypertension may be certified for a
maximum of 6 months.
What minimum PaO2 level is necessary if the driver has an ABG
due to a chronic respiratory disorder?
a. 70 mm Hg
b. 55 mm Hg
c. 60 mm Hg
d. 65 mmHg
Ans: Correct answer is "D". To be qualified, the driver should meet a
minimum arterial blood gas (PaO2) greater than 65.
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
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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. Disqualify the driver.
b. Qualify the driver for 1 year.
c. Qualify the driver for 2 years.
d. Consult with the cardiologist to determine if the driver suffers
from angina.
Ans: Correct answer is "A". The driver has not completed the required 2-
month waiting period, but 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. The date of the certification
would be from the date of the original examination.
A driver provides an audiometric test documenting the following:
1. 500 Hz: 35 Right ear; 40 Left ear
2. 1000 HZ: 40 Right ear; 45 Leftear
3. 2000 HZ: 40 Right ear; 45 Leftear
4. 4000 Hz: 50 Right ear; 50 Left ear
The medical examinershould:
a. Disqualify the driver because he does not meet minimum
hearing requirementsto drive.
b. Certify the driver for 2years.
c. Certify the driver for 1 year.
d. Require the driver to obtain a hearing exemption.
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Ans: Correct answer is "B". 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.
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 2years.
b. Require the driver to obtain a vision exemption because of the
limitation in the driver's left peripheral field.
c. Disqualify the driver.
d. Have the driver consult with an Ophthalmologist to determine if
the driver's peripheral vision meets minimum standards.
Ans: Correct answer is "A". A driver must exhibit a minimum peripheral
vision of 70 degrees bilaterally.
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.
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d. Require a skill performance evaluation to ascertain if the driver
has any limitations with driving.
Ans: Correct answer is "B". 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.
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.
Ans: Correct answer is "A". Use of marijuana is prohibited by Federal law
while driving a CMV and trumps State law in this matter.
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 1Hypertension.
c. Stage 2Hypertension.
d. Stage 3Hypertension.
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DOT 2024 Study Guide Questions and Answers
How often is a driver with stage 3 hypertension recertified? a.
Every 3 months.
b. Every 6 months.
c. Every 12 months.
d. Every 2 years.
Ans: b. Every 6 months.
A driver with a history of stage 3 hypertension may be certified for a
maximum of 6 months.
What minimum PaO2 level is necessary if the driver has an ABG
due to a chronic respiratory disorder?
a. 70 mm Hg
b. 55 mm Hg
c. 60 mm Hg
d. 65 mmHg
Ans: Correct answer is "D". To be qualified, the driver should meet a
minimum arterial blood gas (PaO2) greater than 65.
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
© 2025 All rights reserved
, 2 | Page
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. Disqualify the driver.
b. Qualify the driver for 1 year.
c. Qualify the driver for 2 years.
d. Consult with the cardiologist to determine if the driver suffers
from angina.
Ans: Correct answer is "A". The driver has not completed the required 2-
month waiting period, but 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. The date of the certification
would be from the date of the original examination.
A driver provides an audiometric test documenting the following:
1. 500 Hz: 35 Right ear; 40 Left ear
2. 1000 HZ: 40 Right ear; 45 Leftear
3. 2000 HZ: 40 Right ear; 45 Leftear
4. 4000 Hz: 50 Right ear; 50 Left ear
The medical examinershould:
a. Disqualify the driver because he does not meet minimum
hearing requirementsto drive.
b. Certify the driver for 2years.
c. Certify the driver for 1 year.
d. Require the driver to obtain a hearing exemption.
© 2025 All rights reserved
, 3 | Page
Ans: Correct answer is "B". 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.
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 2years.
b. Require the driver to obtain a vision exemption because of the
limitation in the driver's left peripheral field.
c. Disqualify the driver.
d. Have the driver consult with an Ophthalmologist to determine if
the driver's peripheral vision meets minimum standards.
Ans: Correct answer is "A". A driver must exhibit a minimum peripheral
vision of 70 degrees bilaterally.
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.
© 2025 All rights reserved
, 4 | Page
d. Require a skill performance evaluation to ascertain if the driver
has any limitations with driving.
Ans: Correct answer is "B". 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.
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.
Ans: Correct answer is "A". Use of marijuana is prohibited by Federal law
while driving a CMV and trumps State law in this matter.
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 1Hypertension.
c. Stage 2Hypertension.
d. Stage 3Hypertension.
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