---
kind: "section"
citation: "40 C.F.R. § 1037.401"
title: "40"
number: "1037.401"
heading: "General provisions."
url: "https://uscodex.org/cfr/40/1037.401"
---

# §1037.401. General provisions.

- (a) We may perform in-use testing of any vehicle subject to the standards of this part. For example, we may test vehicles to verify drag areas or other GEM inputs as specified in [paragraph (b)](#b) of this section.
- (b) We may measure the drag area of a vehicle you produced after it has been placed into service. We may use any of the procedures as specified in §§ [1037.525](/cfr/40/1037.525.md) and [1037.527](/cfr/40/1037.527.md) for measuring drag area. Your vehicle conforms to the regulations of this part with respect to aerodynamic performance if we measure its drag area to be at or below the maximum drag area allowed for the bin to which that configuration was certified.

## Notes

### Amendments

[81 FR 74048, Oct. 25, 2016, as amended at 89 FR 29778, Apr. 22, 2024]

### Authority

Authority: 42 U.S.C. 7401—7671q.

### Source

Source: 81 FR 74048, Oct. 25, 2016, unless otherwise noted.

### Amendments

[81 FR 74048, Oct. 25, 2016, as amended at 89 FR 29778, Apr. 22, 2024]