# Minimum Driving Range for Dual Fueled Electric Passenger Automobiles
> **US Department of Transportation** · Final rule. · Published 1998-12-01 · Effective 1999-02-01 · 63 FR 66064
## Document
- **Document number:** 98-31779
- **Category:** other
- **Sub-agency:** US Department of Transportation
- **Federal Register citation:** 63 FR 66064
- **CFR reference:** 49 CFR 538
- **Publication date:** 1998-12-01
- **Effective date:** 1999-02-01
- **DOT docket:** Docket No. NHTSA-98-3429
## Abstract

This rule establishes a minimum driving range of 7.5 miles for dual fueled electric passenger automobiles, otherwise known as hybrid electric vehicles (HEVs), when operating on the EPA urban cycle and a minimum driving range of 10.2 miles on the EPA highway cycle. The purpose of establishing the range is to meet statutory requirements intended to encourage the production of HEVs. An HEV which meets the range would qualify to have its fuel economy calculated according to a special procedure that would facilitate the efforts of its manufacturer to comply with the corporate average fuel economy standards.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/12/01/98-31779/minimum-driving-range-for-dual-fueled-electric-passenger-automobiles)
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