### Question
How does Plan Requirements for Nonattainment Areas define lapse?


### Answer
Under *42 U.S.C. § 7506*, **lapse** is defined as:

> that the conformity determination for a transportation plan or transportation improvement program has expired, and thus there is no currently conforming transportation plan or transportation improvement program

#### Citation:
  - *42 U.S.C. § 7506*
  - Heading: **CHAPTER 85-AIR POLLUTION PREVENTION AND CONTROL > SUBCHAPTER I-PROGRAMS AND ACTIVITIES > Part D-Plan Requirements for Nonattainment Areas > subpart 1-nonattainment areas in general**

