# Special Regulations; Areas of the National Park System, Yellowstone National Park
> **National Park Service** · Final rule. · Published 2012-12-12 · Effective 2012-12-15 · 77 FR 73919
## Document
- **Document number:** 2012-29911
- **Category:** park-regulation
- **Sub-agency:** National Park Service
- **Federal Register citation:** 77 FR 73919
- **CFR reference:** 36 CFR 7
- **Publication date:** 2012-12-12
- **Effective date:** 2012-12-15
- **Interior docket:** NPS-YELL-11802
## Abstract

This rule implements the amended Record of Decision for the 2011 Winter Use Plan/Environmental Impact Statement and governs winter visitation and certain recreational activities in Yellowstone National Park for the 2012-2013 winter season. The rule retains, for one additional year, the regulation and management framework that have been in place for the past three winter seasons (2009-2010, 2010-2011, and 2011-2012). Specifically, the rule retains provisions that require most recreational snowmobiles operating in the park to meet certain National Park Service air and sound emissions requirements; requires snowmobiles and snowcoaches in Yellowstone to be accompanied by a commercial guide; sets daily entry limits on the numbers of snowmobiles (up to 318) and snowcoaches (up to 78) that may enter the park; and prohibits traveling off designated oversnow routes.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/12/12/2012-29911/special-regulations-areas-of-the-national-park-system-yellowstone-national-park)
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