An escort certificate shall be valid: (a) for a New York state licensee from its date of issuance until the expiration of such person's driver's license, and (b) for non-residents, a four year period from its date of issuance.
New York Legal Code
An escort certificate shall be valid: (a) for a New York state licensee from its date of issuance until the expiration of such person's driver's license, and (b) for non-residents, a four year period from its date of issuance.