N.M. Admin. Code § 20.2.99.133
There must be a currently conforming transportation plan and currently conforming TIP at the time of project approval, or a project must meet the requirements in Subsection B of 20.2.99.111 NMAC during the twelve (12) month lapse grace period. Only one conforming transportation plan or TIP may exist in an area at any time; conformity determinations of a previous transportation plan or TIP expire once the conformity determination for the current plan or TIP is made by US DOT. The conformity determination on a transportation plan or TIP will also lapse if conformity is not determined according to the frequency requirements of 20.2.99.111 NMAC through 20.2.99.115 NMAC. This criterion is not required to be satisfied at the time of project approval for a TCM specifically included in the SIP, provided that all other relevant criteria of this Part are satisfied.
N.M. Admin. Code § 20.2.99.133