PART XIV. TESTS FOR SUSPECTED DRUNKEN DRIVERS
§661. Operating a vehicle under the influence of alcoholic beverages or illegal substance or
controlled dangerous substances; implied consent to chemical tests; administering of
test and presumptions
A.(1) Any person, regardless of age, who operates a motor vehicle upon the public
highways of this state shall be deemed to have given consent, subject to the provisions of
R.S. 32:662, to a chemical test or tests of his blood, breath, urine, or other bodily substance
for the purpose of determining the alcoholic content of his blood, and the presence of any
abused substance or controlled dangerous substance as set forth in R.S. 40:964 in his blood
if arrested for any offense arising out of acts alleged to have been committed while the
person was driving or in actual physical control of a motor vehicle while believed to be under
the influence of alcoholic beverages or any abused substance or controlled dangerous
substance as set forth in R.S. 40:964.
(2)(a) The test or tests shall be administered at the direction of a law enforcement
officer having reasonable grounds to believe the person, regardless of age, to have been
driving or in actual physical control of a motor vehicle upon the public highways of this state
while under the influence of either alcoholic beverages or any abused substance or controlled
dangerous substance as set forth in R.S. 40:964. The law enforcement agency by which such
officer is employed shall designate in writing and under what conditions which of the
aforesaid tests shall be administered.
(b) In the case of all traffic fatalities, the coroner, or his designee, shall perform or
cause to be performed a toxicology screen on the victim or victims of all traffic fatalities for
determining evidence of any alcoholic content of the blood and the presence of any abused
substance or controlled dangerous substance as set forth in R.S. 40:964 which shall include
the extracting of all bodily substance samples necessary for such toxicology screen. The
coroner, or his designee, shall be responsible for ensuring the body is not removed from his
custody until such time as the bodily substance samples are extracted. The coroner's report
shall be made available to the investigating law enforcement agency and may be admissible
in any court of competent jurisdiction as evidence of the alcoholic content of the blood and
the presence of any abused substance or controlled dangerous substance as set forth in R.S.
40:964 at the time of the fatality. The coroner, or his designee, shall determine, by the most
current and accepted scientific method available, whether the presence of alcoholic content
in the blood of the deceased is the result of pre-death ingestion of alcoholic beverages or the
postmortem synthesis of ethanol. Nothing herein shall be construed to limit the authority of
the investigating law enforcement agency from conducting an investigation of the accident
scene concurrently with the coroner or his designee.
(3) If the person is under twenty-one years of age, the test or tests shall be
administered at the direction of a law enforcement officer having reasonable grounds to
believe the person to have been driving or in actual physical control of a motor vehicle upon
the public highways of this state after having consumed alcoholic beverages. The law
enforcement agency by which the officer is employed shall designate in writing and under
what conditions which of the tests shall be administered.
B. Any person who is dead, unconscious or otherwise in a condition rendering him
incapable of refusal shall be deemed not to have withdrawn the consent provided by
Subsection A of this section, and the test or tests may be administered subject to the
provisions of R.S. 32:662.
C.(1) When a law enforcement officer requests that a person submit to a chemical
test as provided for above, he shall first read to the person a standardized form approved by
the Department of Public Safety and Corrections. The department is authorized to use such
language in the form as it, in its sole discretion, deems proper, provided that the form does
inform the person of the following:
(a) His constitutional rights under Miranda v. Arizona.
(b) That his driving privileges can be suspended for refusing to submit to the
chemical test.
(c) That his driving privileges can be suspended if he submits to the chemical test
and such test results show a blood alcohol level of 0.08 percent or above or, if he is under
the age of twenty-one years, a blood alcohol level of 0.02 percent or above.
(d) That his driving privileges can be suspended if he submits to the chemical test
and the test results show a positive reading indicating the presence of any controlled
dangerous substance listed in R.S. 40:964. The department may exclude this warning from
the form required by this Paragraph until such time as a suspension for a test result shows a
positive reading indicating the presence of any controlled dangerous substance listed in R.S.
40:964 is enacted by the legislature.
(e) That refusal to submit to a chemical test after an arrest for an offense of driving
while intoxicated if he has refused to submit to such test on two previous and separate
occasions of any previous such violation is a crime under the provisions of R.S. 14:98.7 and
the penalties for such crime are the same as the penalties for first conviction of driving while
intoxicated.
(f) Repealed by Acts 2020, No. 40, §3, eff. June 4, 2020.
(2) In addition, the arresting officer shall, after reading said form, request the arrested
person to sign the form. If the person is unable or unwilling to sign, the officer shall certify
that the arrestee was advised of the information contained in the form and that the person was
unable to sign or refused to sign.
D. The notice issued to the person tested pursuant to R.S. 32:667 shall include the
name and employing agency of all law enforcement officers actively participating in the stop,
detention, investigation, or arrest of the person.
Added by Acts 1968, No. 273, §14. Amended by Acts 1972, No. 534, §2; Acts 1983,
No. 632, §1, eff. Jan. 1, 1984; Acts 1984, No. 409, §1; Acts 1985, No. 382, §1, eff. July 10,
1985; Acts 1987, No. 338, §1; Acts 1994, 3rd Ex. Sess., No. 20, §2; Acts 1997, No. 1296,
§3, eff. July 15, 1997; Acts 1997, No. 1297, §1, eff. July 15, 1997; Acts 1999, No. 1354, §1;
Acts 2001, No. 781, §4, eff. Sept. 30, 2003; Acts 2003, No. 543, §2; Acts 2004, No. 318, §1;
Acts 2020, No. 40, §§2, 3, eff. June 4, 2020.
NOTE: Section 6 of Acts 2001, No. 781, provides that the provisions of the
Act shall become null and of no effect if and when Section 351 of P.L. 106-346 regarding the withholding of federal highway funds for failure to enact
a 0.08 percent blood alcohol level is repealed or invalidated for any reason.