Current textIn force on June 1, 2010Source: annual CFR editions 1999–2016
§ 381.100 What is the purpose of this part?
Current wording, first on file in the 1999 annual edition.
Before Jan. 1, 2017 the record is one snapshot per annual CFR edition, revised as of October 1. This is the 2009 edition's wording. An amendment that took effect between Oct. 1, 2009 and June 1, 2010 would not appear until the next edition, so check the citations below and the Federal Register for exact effective dates.
49 CFR § 381.100 — What is the purpose of this part?. Text in force on June 1, 2010. This wording effective October 1, 1999 to present. Source: govinfo, 2009 edition, https://www.govinfo.gov/app/details/CFR-2009-title49-vol5/CFR-2009-title49-vol5-sec381-100. Retrieved from FMCSR.com, https://fmcsr.com/reg/381.100?asof=2010-06-01, on October 26, 2026. Unofficial compilation; verify against the official source.
This part prescribes the rules and procedures for requesting waivers and applying for exemptions from those provisions of the Federal Motor Carrier Safety Regulations (FMCSRs) which were issued on the authority of 49 U.S.C. 31136 or chapter 313, and the initiation and administration of pilot programs.
Amendment history
1 distinct wording on file since Oct. 1, 1999A new entry appears whenever the regulatory words change between government snapshots. Day-precise from the eCFR (2017 onward); before that, one snapshot per annual CFR edition (revised as of October 1). Bracketed citations are the Federal Register history printed with the section.