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OSPA Offers Practically Free Traffic-Stop Training for Rural Law Enforcement

Assistant State Prosecuting Attorney John R. Messinger will conduct a 4-hour presentation covering 4th Amendment issues with a focus on traffic stops.  The presentation is accompanied by a paper (distributed in advance) and includes:

∙ Historical perspective
∙ In-depth coverage of controlling law
∙ Discussion of recent cases and pending issues
∙ A quiz!

This service is for small or rural counties that do not have the resources to send officers for training.   Credit can be earned with a department’s approval. 


Call ((512) 463-1660) or email (information@spa.texas.gov) John to schedule a training day for this August (August will be the only time the service is offered).   

The department, county, or city will be responsible for John's mileage reimbursement and overnight residency (if needed). 


PD-1199-17 03/21/2018

“The court of appeals erred in affirming the trial court’s allowing evidence of a drug test without testimony of the chemist who performed the testing.”

Williams was charged with manslaughter and fleeing the scene of an accident. He admitted being intoxicated on methamphetamine and cocaine at the time and provided a blood sample. Two different labs conducted testing. The State called one lab’s witness to testify that marijuana and Soma were detected in Williams’s blood. Results from the other lab (showing the presence of amphetamine, methamphetamine, and cocaine metabolite) were admitted through a certificate of analysis report. Under Tex. Code Crim. Proc. art. 38.41, a defendant can prevent admission of a certificate of analysis and insist on the analyst’s testimony by objecting at least 10 days before trial. Williams did not do so. He argued at trial, however, that because the certificate of analysis did not state that the affiant had personally conducted the testing, it did not substantially comply with Article 38.41, and thus he did not have to object pretrial. The certificate of analysis was admitted at trial, however, and he was convicted of both offenses.

The court of appeals observed that the sample certificate of analysis in Article 38.41, § 5 includes a statement that the affiant “conducted the following tests or procedures” but that there is no express requirement the affiant be the analyst who conducted the testing. It held that the certificate substantially complied with the requirements of Article 38.41 and that Williams failed to preserve his confrontation objection by not objecting timely.

 Williams argues that a certificate of analysis that is not sworn to by the analyst who performed the testing “calls into question the reliability and competency of the drug testing” and should not have the effect of forfeiting his confrontation rights.

Contact Us

Mailing Address

P. O. Box 13046
Austin, Texas 78711-3046

Physical Address

209 W. 14th Street
Austin, Texas 78701


(512) 463-1660


(512) 463-5724