18 USC § 343 - Presumptions

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For purposes of this chapter—

(1) an individual with a blood alcohol content of .10 percent or more shall be presumed to be under the influence of alcohol; and

(2) an individual shall be presumed to be under the influence of drugs if the quantity of the drug in the system of the individual would be sufficient to impair the perception, mental processes, or motor functions of the average individual.

Source

(Added Pub. L. 99–570, title I, § 1971(a),Oct. 27, 1986, 100 Stat. 3207–59; amended Pub. L. 100–690, title VI, § 6473(c),Nov. 18, 1988, 102 Stat. 4379.)

Amendments

1988—Par. (1). Pub. L. 100–690, § 6473(c)(1), substituted “.10 percent” for “.10” and struck out “conclusively” after “shall be”.

Par. (2). Pub. L. 100–690, § 6473(c)(2), struck out “conclusively” after “shall be”.

The table below lists the classification updates, since Jan. 7, 2011, for this section. Updates to a broader range of sections may be found at the update page for containing chapter, title, etc.

The most recent Classification Table update that we have noticed was Friday, May 13, 2011

An empty table indicates that we see no relevant changes listed in the classification tables. If you suspect that our system may be missing something, please double-check with the Office of the Law Revision Counsel.

How To Use

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The Session Year indicates which session of Congress was responsible for the changes classified. The Congress number forms the first part of the Public Law number; each Congress has two sessions.

Abbreviations used in the Description of Change column:

An empty field implies a standard amendment.
"new" means a new section or new note, or all new text of an existing section or note.
"nt" means note.
"nt [tbl]" means note [table].
"prec" means preceding.
"fr" means a transfer from another section.
"to" means a transfer to another section.
"omitted" means the section is omitted.
"repealed" means the section is repealed.
"nt ed change" and "ed change" - See the Editorial Classification Change Table [pdf].

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General Reference

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18 USC	Description of Change	Session Year	Public Law	Statutes at Large

18 USC § 343 - Presumptions

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