# Control of Air Pollution From New Motor Vehicles and New Motor Vehicle Engines: Voluntary Standards for Light-Duty Vehicles
> **Rule** · Final rule. · Published 1997-06-06 · Effective 1997-08-05 · 62 FR 31192
## Document
- **Document number:** 97-12366
- **Category:** air-emissions
- **Federal Register citation:** 62 FR 31192
- **CFR reference:** 40 CFR 85
- **Publication date:** 1997-06-06
- **Effective date:** 1997-08-05
- **EPA docket:** AMS-FRL-5823-7
## Abstract

Today EPA is finalizing the main regulatory framework for the National Low Emission Vehicle (National LEV) program. After EPA takes comment on and finalizes supplemental regulations, today's regulations would allow auto manufacturers to volunteer to comply with tailpipe standards for cars and light, light-duty trucks that are more stringent than EPA can mandate. Once a manufacturer opts into the program, the standards would be enforced in the same manner as any other federal motor vehicle pollution control requirement. Manufacturers would be willing to opt into this program if there is a binding commitment to it by the northeastern part of the country (the Ozone Transport Region (OTR) or the States of the Ozone Transport Commission (OTC States)). If the program were to come into effect after EPA finalizes the supplemental regulations, it would achieve significant reductions in smog and other air pollution nationwide. It also would achieve the same emission reductions in the OTR as if each OTC State adopted a state motor vehicle program. Today's regulations, together with other Agency actions, also substantially harmonize federal and California motor vehicle standards and test procedures to enable manufacturers to design and test vehicles to one set of standards nationwide if they opt into National LEV. With this final rule, EPA is providing the regulatory structure that is a necessary step towards completion of an on-going process initiated by the OTC States and the auto manufacturers to improve public health through the introduction of cleaner vehicles nationwide and in the Northeast. The process cannot be completed until the auto manufacturers and the OTC States both agree to be bound by the program. As a result of the hard work of these parties, agreement has been reached on the main regulatory framework of the National LEV program. This agreement is reflected in today's rule. However, some additional issues must be resolved regarding the commitments the OTC Stat

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/06/06/97-12366/control-of-air-pollution-from-new-motor-vehicles-and-new-motor-vehicle-engines-voluntary-standards)
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