49 CFR — Transportation
Appendix B to Part 220—Recommended Pronunciation of Numerals
United States · 49 CFR — Transportation · Status: effective
Cite this
- Citation
- 49 CFR — Transportation, Appendix B to Part 220—Recommended Pronunciation of Numerals, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/258281
- Permanent ID
ys:prov:258281@1- SHA-256
a416fd3f13906ee2062cd03296f017ce612d42cfebb68b405246a1d7852882b6
The hash is SHA-256 of this version's text, with every run of whitespace collapsed to a single space and the ends trimmed. The ID always leads back here, and checking it says whether the text you cited is still the current version.
Full text
To distinguish numbers from similar sounding words, the word “figures”should be used preceding such numbers. Numbers should be pronounced as follows:
(The figure ZERO should be written as “0” to distinguish it from the letter “O”. The figure ONE should be underlined to distinguish it from the letter “I”. When railroad rules require that numbers be spelled, these principles do not apply.)
The following examples illustrate the recommended pronunciation of numerals:
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.