![]() In the 1910s, Zion National Park was well off the beaten path. (Photo by Fabian Kron via Flickr) The History of Zion’s Tunnel A RV waits for a ranger to signal for one-way traffic so large vehicles may pass through the Mt. Visit for more information such as operation hours and procedures. Bicyclists need to arrange for shuttle service. Prohibited vehicles include those over 13 feet 1 inch tall, semi-trucks, vehicles carrying hazardous materials, vehicles weighing more than 50,000 pounds, single vehicles over 40 feet long, or combined vehicles over 50 feet long.īicycles and pedestrians are also banned from the tunnel, which has no artificial lighting. Rangers posted at both ends of the tunnel convert two-way tunnel traffic to one-way for larger vehicles, ensuring safe passage.Īny vehicle that is 7 feet 10 inches in width and/or 11 feet 4 inches in height or larger is required to have a tunnel permit. To ensure safety, the National Park Service began an escort (traffic control) service in the spring of that year. ![]() A tunnel on the Mount Carmel Highway Fabio Achilli via Flickr Tunnel Restrictions and EscortsĪ study by the Federal Highway Administration in early 1989 found that large vehicles could not negotiate the curves of the tunnel without crossing the center line. Built in 1927 when the average vehicle was smaller than today’s rides, the tunnel can also be a dangerous thoroughfare for RVs and bicycles. The Zion-Mount Carmel tunnel provides access to the national park from the east via a twisting and switchback-filled road making for a thrilling cruise through red rock canyons. Various liability insurance and first aid requirements must be met in order to receive a permit.A 1.1 mile-long tunnel is credited with converting Zion National Park from an isolated and rarely-visited park to one of the most popular sites in the National Park Service system. A Zion CUA is valid for one calendar year. Commercial Interpretive Services (limited trail use)Ī business wishing to do any of these activities must procure a CUA in advance and follow the terms and conditions of the authorization.Use the dropdown menu above to navigate to RPRS process guidance and criteria.Īny commercial activity, other than commercial filming and/or photography, requires a Commercial Use Authorization (CUA).The Commercial Use Authorization (CUA) program authorizes the provision of suitable commercial services to park area visitors, as long as three conditions are met: the services (a) will have minimal impact on the park area’s resources and values (b) are consistent with the purposes for which the park area was established and (c) are consistent with all applicable park area management plans, policies and regulations.The Superintendent grants CUAs to businesses when there are no fixed commercial facilities within a national park area the commercial activity originates and terminates outside the park no money changes hands on park lands and no commercial solicitation occurs on park lands.CUA permits are available for the following activities: Reporting and curation requirements must also be observed by each PI to preserve research efforts, obtain annual NPS approval for ongoing research activities, as well as to provide public access to research data and analyses. It is imperative that PIs are familiar with NPS Director’s Order 79: Integrity of Scientific and Scholarly Activities as well as the RPRS application guidelines provided in the RPRS Help menu, specifically Investigator Help. Prior to submitting an application, every PI is encouraged to become acquainted with the IRMA Data Store and NPS LIBRIS to access recent NPS research and resource management projects as well as the information available on NPS Natural Resources, Cultural Resources, and Social Sciences. A Principle Investigator (PI) may Request a Permit by submitting an application through the Research Permit and Reporting System ( RPRS) as accessed through the Integrated Resource Management Application ( IRMA) web portal. In addition to providing invaluable knowledge to park administrators for decision-making purposes, research permits are required to ensure that the values of the park, the visitor experience, and park resources remain intact. All science and research activities occurring at ZION are authorized with a Scientific Research and Collecting Permit. Scientific Research & Collecting Permit ProcessĬonducting research within a unit of the National Park Service (NPS) presents the opportunity to both advance scientific knowledge and to serve as a steward by protecting natural and cultural resources for future generations.
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