You must obtain an A3 (Med Cert Exempt) restriction in addition to your K restriction if:
- you were issued a K restriction because your original CDL was issued prior to September 9, 1999, and
- you were not able to meet the federal medical requirements.
The two restrictions together will verify to law enforcement and USDOT representatives that you are not required to have a USDOT Medical Examiner's Certificateand that your operation is limited to New York State only.