During all periods there shall be a currently conforming transportation plan and currently conforming TIP at the time of project approval. This criterion is satisfied if the current transportation plan and TIP have been found to conform to the applicable implementation plan by the MPO and USDOT according to the procedures of this subpart. 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 current plan or TIP is found to conform by USDOT. The conformity determination on a transportation plan or TIP will also lapse if conformity is not determined according to the frequency requirements of R18-2-1404.
Ariz. Admin. Code § R18-2-1414