---
kind: "section"
citation: "40 C.F.R. § 86.423-78"
title: "40"
number: "86.423-78"
heading: "Test vehicles."
url: "https://uscodex.org/cfr/40/86.423-78"
---

# §86.423-78. Test vehicles.

- (a)
  - (1) Before beginning service accumulation on a test vehicle, the manufacturer may perform a zero-kilometer exhaust emission test.
  - (2) If such a test is performed, the data shall be submitted to the Administrator when the application is submitted.
  - (3) Zero-kilometer test results shall not be included in the determination of deterioration factors.
- (b) Once a manufacturer begins to operate a test vehicle, as indicated by compliance with [paragraph (a)](#a) of this section, the data from the vehicle will be used, unless specified otherwise by the Administrator. Discontinuation of a vehicle shall be allowed only with the written consent of the Administrator.
- (c) Test vehicles shall be calibrated at zero kilometres within the production tolerances applicable to the manufacturer's specifications.
- (d) The Administrator may disqualify a vehicle which receives assembly line operations and adjustments which will not be performed on production vehicles.

## Notes

### Amendments

[42 FR 1126, Jan. 5, 1977, as amended at 49 FR 48138, Dec. 10, 1984]

### Source

Source: 42 FR 1126, Jan. 5, 1977, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401-7671q.

### Amendments

[42 FR 1126, Jan. 5, 1977, as amended at 49 FR 48138, Dec. 10, 1984]