625 ILCS 5/11-501.5
2021 Illinois Compiled Statutes|Chapter 625 - VEHICLES|625 ILCS 5/ - Illinois Vehicle Code.|Chapter 11 - Rules Of The Road

 (from Ch. 95 1/2, par. 11-501.5)Sec. 11-501.5. Preliminary Breath Screening Test.(a) If a law enforcement officer has reasonable suspicion to believe  that a person is  violating or has violated Section 11-501 or a similar provision of a local  ordinance, the officer, prior to an arrest, may request the person to  provide a sample of his or her breath for a preliminary breath screening  test using a portable device approved by the Illinois State Police.  The person may refuse the test.  The results of this preliminary breath screening test may be used by the  law enforcement officer for the purpose of assisting with the determination  of whether to require a chemical test as authorized under Sections 11-501.1  and 11-501.2, and the appropriate type of test to request.  Any chemical  test authorized under Sections 11-501.1 and 11-501.2 may be requested by  the officer regardless of the result of the preliminary breath screening  test, if probable cause for an arrest exists.  The result of a preliminary  breath screening test may be used by the defendant as evidence in any  administrative or court proceeding involving a violation of Section 11-501 or  11-501.1.(b) The Illinois State Police shall create a pilot program to  establish  the effectiveness of pupillometer technology (the measurement of the pupil's  reaction to light) as a noninvasive technique to detect and measure possible  impairment of any person who drives or is in actual physical control of a motor  vehicle resulting from the suspected usage of alcohol, other drug or drugs,  intoxicating compound or compounds or any combination thereof.  This technology  shall also be used to detect fatigue levels of the operator of a Commercial  Motor Vehicle as defined in Section 6-500(6), pursuant to Section 18b-105  (Part 395-Hours of Service of Drivers) of the Illinois Vehicle Code.  A State Police officer may request that the operator of a commercial motor  vehicle have his or her eyes examined or tested with a pupillometer device.  The person may refuse the examination or test.  The State Police officer shall  have the device readily available to limit undue delays.If a State Police officer has reasonable suspicion to believe that a  person is violating or has violated Section 11-501, the officer may use the  pupillometer technology, when available.  The officer, prior to an arrest, may  request the person to have his or her eyes examined or tested with a  pupillometer device.  The person may refuse the examination or test.  The  results of this examination or test may be used by  the officer for the purpose of assisting with the determination of whether to  require a chemical test as authorized under Sections 11-501.1 and 11-501.2 and  the appropriate type of test to request.  Any chemical test authorized under  Sections 11-501.1 and 11-501.2 may be requested by the officer regardless of  the result of the pupillometer examination or test, if probable cause for an  arrest exists. The result of the examination or test may be used by the  defendant as evidence in any administrative or court proceeding involving a  violation of 11-501 or 11-501.1.The pilot program shall last for a period of 18 months and involve the  testing of 15 pupillometer devices.  Within 90 days of the completion of the  pilot project, the Illinois State Police shall file a report with the  President of the Senate and Speaker of the House evaluating the project.  (Source: P.A. 102-538, eff. 8-20-21.)