Research Being Done on Tests to Detect Marijuana-Impaired Driving

Impaired Driving is not only caused by alcohol, but by any substance use that results in impairment. But effectively testing for impairment caused by substances other than alcohol can be difficult. Click on the link below to read an article about marijuana-impaired driving and the research that is currently being done to develop an effective test for it.

This Cannabis Saliva Test Could One Day Be Used To Detect Impaired Driving

TJCTC’s DWI Bond Condition Program

TJCTC’s DWI Bond Condition Program is a part of a statewide effort to reduce the incidence of DWI offenses in Texas counties in adopting a comprehensive plan for setting, monitoring, and enforcing bond conditions in DWI cases. The program is free for counties and promotes the use of bond conditions (such as ignition interlock devices) that reduce the incidence of DWI recidivism, increases consistency in setting bond conditions by a magistrate and a trial court, and ensures that bond conditions required by law are properly set, monitored, and enforced.

The program web page includes additional details, including a video about the program, and tells you how to contacts us if you would like more information or are interested in signing up. We have also recently updated the web page with a new map that shows all of the counties that are currently expressing interest or participating in the Program.

Please click here to visit the web page!

Ignition Interlock Device Bond Condition: When it is Required and When it is Optional


During the 2019 legislative session, a change was made to when a magistrate is required to order an ignition interlock device (IID) as a bond condition. For the offense of DWI with a Child Passenger (the elements of this offense can be found in Section 49.045 of the Penal Code), the IID condition used to only be required if it was a subsequent offense. Now, this condition is required for this offense whether it is a first or subsequent offense. This new law applies to a defendant released on bond on or after 9/1/19 even if the offense was committed before then.

Below is a chart summarizing the current law for when a magistrate must impose an IID bond condition and when it is up to the discretion of the magistrate to decide whether or not to impose it. In the chart, CCP stands for Code of Criminal Procedure, PC stands for Penal Code, and DWI stands for Driving While Intoxicated.

IID Bond Condition Chart

Standard Field Sobriety Tests and Drug Impairment


At the Lifesavers National Conference on Highway Safety in Louisville, KY earlier this year, there was a session on Standard Field Sobriety Tests (SFSTs) and drug impairment. The session was about how research shows that SFSTs are effective at detecting impairment due to drugs and not just due to alcohol.

Here is some of the research that was provided in the session:

An Examination of the Validity of the Standardized Field Sobriety Test in Detecting Drug Impairment 

Detecting Impairment Associated with Cannabis with and without Alcohol on the Standard Field Sobriety Tests 

Examining the Dffect of dl-3,4-Methylenedioxymethamphetamine (MDMA) and Methamphetamine on the Standardized Field Sobriety Tests

The Relationship between Performance on the SFSTs, Driving Performance and the Level of Delta 9-THC in Blood

The Standardized Field Sobriety Tests and Measures of Cognitive Functioning

A 2 Year Study of THC Concentrations in Drivers: Examining Driving and Field Sobriety Test Performance

A Placebo-Controlled Study to Assess Standardized Field Sobriety Tests Performance During Alcohol and Cannabis Intoxication

An Evaluation of the Sensitivity of the Standardised Field Sobriety Tests to Detect the Presence of Amphetamine

Article About Repeat DWI Offenders


This article speaks to how important a justice of the peace’s role as a magistrate is. If you want to do more in your county, please reach out to Randy Sarosdy or Rebecca Glisan at our office to ask about our DWI Bond Condition Program.

To read the article, click here: