The DOT Physical Eye Exam: What If I'm Colorblind or Wear Glasses? (2026 Rules)

"I can see fine, but I can't pass those color dot tests."

Many drivers worry that being colorblind, or having poor vision in one eye, means they are banned from trucking. The federal rule is more specific than that. It sets a vision standard, and it also sets an alternative standard for drivers who do not meet it with one eye.

This article sticks to 49 CFR 391.41 and 391.44 and the FMCSA Medical Examiner's Handbook (2024). The medical examiner decides each case.

The standard test in 49 CFR 391.41(b)(10) has these parts:

The rule asks for the "ability to recognize the colors of traffic signals and devices showing standard red, green, and amber" (49 CFR 391.41(b)(10)(i)). It does not require perfect color vision.

The handbook says that if you can recognize standard red, green and amber, you meet the minimum standard even if you have some type of color perception deficiency. People who cannot recognize those colors are not physically qualified (Handbook 4.4.4.4.3).

How examiners test it

The handbook says an examiner may use a standard color test (such as Ishihara, pseudoisochromatic plates, yarn or Farnsworth) or a controlled test using standard red, green and amber. Examples of controlled tests it gives are the standard colors on the Snellen chart, or objects that correspond to the standard colors.

The old Federal Vision Exemption Program has ended. The handbook says certificates issued with a vision exemption became void on March 22, 2023. In its place, 49 CFR 391.44 sets an alternative vision standard for a driver who does not meet, with the worse eye, the 20/40 standard with correction or the 70 degree field of vision, or both.

How it works

• In your better eye you need distance vision of at least 20/40 (with or without correction) and a field of vision of at least 70 degrees. You must also recognize red, green and amber, and your vision deficiency must be stable.
• Before the physical, a licensed ophthalmologist or optometrist evaluates you and completes the Vision Evaluation Report, Form MCSA-5871.
• The medical exam must begin within 45 days after the eye doctor signs and dates the report.
• You must be examined at least once a year, and the handbook says the certificate can be for a maximum of 12 months.
• If you are qualified under this standard for the first time, the rule generally requires a road test with a motor carrier before you drive a commercial vehicle, with exceptions listed in 391.44(d). Ask your employer or examiner which applies to you.

The examiner decides whether you meet the standard. Without a completed MCSA-5871, the handbook says you do not meet the alternative standard.

The DOT physical checks the standards in 49 CFR 391.41. Bringing the right papers and knowing what the examiner will check helps the exam go smoothly. The examiner decides.

• Bring your glasses or contacts, and a backup pair if you have one.
• Tell the examiner if color plates are hard for you, and ask about the red, green and amber test.
• Get Form MCSA-5871 from an eye doctor before the exam if one eye does not meet the standard.

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