---
kind: "section"
citation: "40 C.F.R. § 1037.630"
title: "40"
number: "1037.630"
heading: "Special purpose tractors."
url: "https://uscodex.org/cfr/40/1037.630"
---

# §1037.630. Special purpose tractors.

- (a) **General provisions.** This section allows a vehicle manufacturer to reclassify certain tractors as vocational tractors. Vocational tractors are treated as vocational vehicles and are exempt from the standards of [§ 1037.106](/cfr/40/1037.106.md). Note that references to “tractors” outside of this section mean non-vocational tractors.
  - (1) This allowance is intended only for vehicles that do not typically operate at highway speeds, or would otherwise not benefit from efficiency improvements designed for line-haul tractors. This allowance is limited to the following vehicle and application types:
    - (i) Low-roof tractors intended for intra-city pickup and delivery, such as those that deliver bottled beverages to retail stores.
    - (ii) Tractors intended for off-road operation (including mixed service operation that does not qualify for an exemption under [§ 1037.631](/cfr/40/1037.631.md)), such as those with reinforced frames and increased ground clearance. This includes drayage tractors.
    - (iii) Model year 2020 and earlier tractors with a gross combination weight rating (GCWR) at or above 120,000 pounds. Note that Phase 2 and later tractors meeting the definition of heavy-haul tractor in [§ 1037.801](/cfr/40/1037.801.md) must be certified to the heavy-haul standards in [§ 1037.106](/cfr/40/1037.106.md) or [§ 1037.670](/cfr/40/1037.670.md).
  - (2) Where we determine that a manufacturer is not applying this allowance in good faith, we may require the manufacturer to obtain preliminary approval before using this allowance.
- (b) **Requirements.** The following requirements apply with respect to tractors reclassified under this section:
  - (1) The vehicle must fully conform to all requirements applicable to vocational vehicles under this part.
  - (2) Vehicles reclassified under this section must be certified as a separate vehicle family. However, they remain part of the vocational regulatory subcategory and averaging set that applies for their service class.
  - (3) You must include the following additional statement on the vehicle's emission control information label under [§ 1037.135](/cfr/40/1037.135.md): “THIS VEHICLE WAS CERTIFIED AS A VOCATIONAL TRACTOR UNDER 40 CFR 1037.630.”
  - (4) You must keep records for three years to document your basis for believing the vehicles will be used as described in [paragraph (a)(1)](#a-1) of this section. Include in your application for certification a brief description of your basis.
- (c) **Production limit.** No manufacturer may produce more than 21,000 Phase 1 vehicles under this section in any consecutive three model year period. This means you may not exceed 6,000 in a given model year if the combined total for the previous two years was 15,000. The production limit applies with respect to all Class 7 and Class 8 Phase 1 tractors certified or exempted as vocational tractors. No production limit applies for tractors subject to Phase 2 and later standards.
- (d) **Off-road exemption.** All the provisions of this section apply for vocational tractors exempted under [§ 1037.631](/cfr/40/1037.631.md), except as follows:
  - (1) The vehicles are required to comply with the requirements of [§ 1037.631](/cfr/40/1037.631.md) instead of the requirements that would otherwise apply to vocational vehicles. Vehicles complying with the requirements of [§ 1037.631](/cfr/40/1037.631.md) and using an engine certified to the standards of [40 CFR part 1036](/cfr/40/part1036.md) are deemed to fully conform to all requirements applicable to vocational vehicles under this part.
  - (2) The vehicles must be labeled as specified under [§ 1037.631](/cfr/40/1037.631.md) instead of as specified in [paragraph (b)(3)](#b-3) of this section.

## Notes

### Amendments

[81 FR 74048, Oct. 25, 2016, as amended at 89 FR 29787, 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 29787, Apr. 22, 2024]