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CFR › Title 36 › Chapter I › Part 4 › Section 4.21

36 CFR 4.21 - Speed limits.

There is 1 rule appearing in the Federal Register for 36 CFR 4. Select the tab below to view, or View eCFR (GPOAccess)
§ 4.21
Speed limits.
(a) Park area speed limits are as follows:
(1) 15 miles per hour: within all school zones, campgrounds, picnic areas, parking areas, utility areas, business or residential areas, other places of public assemblage and at emergency scenes.
(2) 25 miles per hour: upon sections of park road under repair or construction.
(3) 45 miles per hour: upon all other park roads.
(b) The superintendent may designate a different speed limit upon any park road when a speed limit set forth in paragraph (a) of this section is determined to be unreasonable, unsafe or inconsistent with the purposes for which the park area was established. Speed limits shall be posted by using standard traffic control devices.
(c) Operating a vehicle at a speed in excess of the speed limit is prohibited.
(d) An authorized person may utilize radiomicrowaves or other electrical devices to determine the speed of a vehicle on a park road. Signs indicating that vehicle speed is determined by the use of radiomicrowaves or other electrical devices are not required.

Title 36 published on 2012-07-01

The following are only the Rules published in the Federal Register after the published date of Title 36.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2012-07-06; vol. 77 # 130 - Friday, July 6, 2012
    1. 77 FR 39927 - Vehicles and Traffic Safety—Bicycles
      GPO FDSys XML | Text
      DEPARTMENT OF THE INTERIOR, National Park Service
      Final rule.
      The rule is effective August 6, 2012.
      36 CFR Part 4

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.

United States Code
USC : Title 16 - CONSERVATION

§ 1 - Service created; director; other employees

§ 3 - Rules and regulations of national parks, reservations, and monuments; timber; leases

§ 9a - Government of parks, etc.; violation of regulations as misdemeanor

§ 462 - Administration by Secretary of the Interior; powers and duties enumerated

Title 36 published on 2012-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 36 CFR 4 after this date.

  • 2012-07-06; vol. 77 # 130 - Friday, July 6, 2012
    1. 77 FR 39927 - Vehicles and Traffic Safety—Bicycles
      GPO FDSys XML | Text
      DEPARTMENT OF THE INTERIOR, National Park Service
      Final rule.
      The rule is effective August 6, 2012.
      36 CFR Part 4