# Editorial: SC Legislature left DUI and THC bills for dead; DUI restrictions can be revived > **Author:** Benjamin Caplan, MD (ABFM Board Certified, MA Lic. #240562, NPI: 1962722637) > **Publisher:** CED Clinic (https://cedclinic.com) > **Canonical URL:** https://cedclinic.com/sc-thc-dui-legislation-driving-impairment-reform/ > **Published:** 2026-07-11T12:23:03-04:00 | **Last Modified / Clinically Audited:** 2026-09-09T10:00:30-04:00 > **Clinical Summary:** Explore SC THC DUI legislation challenges and clinical impact amid lack of impairment standards and potential for DUI reform in South Carolina. --- ✦ New CED Clinical Relevance #47 Clinical Context Background information relevant to the evolving [cannabis medicine](https://cedclinic.com/essential-oils-industrial-hemp-antimicrobial-benefits/) landscape. PolicyTHCSafetyMental HealthResearchPainAnxiety Why This Matters Clinicians need to understand that the absence of clear THC impairment standards in South Carolina creates diagnostic and documentation challenges when evaluating patients for cannabis-related impairment or advising them on driving safety. Without legislative guidance on THC-specific DUI thresholds, providers cannot reliably counsel patients on legal limits or distinguish between therapeutic use and impairment levels. This regulatory gap directly affects clinical counseling quality and may expose both patients and providers to legal liability when managing [cannabis use](https://cedclinic.com/cannabis-cardiovascular-health-insights-2024/) in the context of driving and public safety. Clinical Summary South Carolina legislators have declined to advance both a DUI reform bill and separate legislation aimed at regulating intoxicating THC use, leaving enforcement and impairment standards unclear for cannabis-involved driving cases. The failure to establish statutory THC limits or impairment testing protocols creates a clinical and legal gap, as physicians may encounter patients facing DUI charges related to [cannabis use](https://cedclinic.com/cannabis-cardiovascular-health-insights-2024/) without standardized biomarkers or legal thresholds to distinguish impairment from passive exposure or residual THC presence. Unlike alcohol’s established blood alcohol concentration limits, the absence of defined THC standards complicates clinician involvement in impairment assessments and creates inconsistent legal consequences across jurisdictions. State legislators retain the opportunity to revisit DUI reform legislation in future sessions, which could establish evidence-based frameworks for assessing cannabis-related impairment and reducing potentially unjust prosecutions. Clinicians should remain aware that patients using cannabis therapeutically may face legal liability for driving without clear legal or scientific standards for impairment, and advocacy for evidence-based legislation may be warranted. Physicians treating patients with [cannabis use](https://cedclinic.com/cannabis-cardiovascular-health-insights-2024/) should counsel patients about the legal and safety risks of driving and stay informed about evolving state legislation that may affect their patients’ legal exposure. Dr. Caplan’s Take “The challenge we face as clinicians is that we still lack standardized, reliable roadside testing for THC impairment, unlike breathalyzers for alcohol, and the relationship between blood THC levels and actual cognitive or motor impairment remains poorly understood in real-world driving scenarios. Without that foundational science and practical enforcement tools, legislators understandably hesitate on DUI legislation, though this shouldn’t prevent us from continuing to counsel patients about the risks of driving after any cannabis use.” Clinical Perspective 💊 The failure of South Carolina’s legislature to advance impaired driving legislation, particularly regarding THC-related DUI, highlights a significant gap in clinical and [public health](https://cedclinic.com/cannabis-mold-contamination-risks-recall-safety/) infrastructure that clinicians should understand when counseling patients. While [cannabis legalization](https://cedclinic.com/the-forgotten-history-of-hemp-in-america/) trends continue across the country, the absence of standardized roadside testing protocols, clear THC impairment thresholds, and legislative frameworks creates clinical ambiguity: providers lack reliable biomarkers to distinguish acute impairment from chronic use or past exposure, complicating both patient safety counseling and medico-legal documentation. This legislative stagnation is particularly relevant for primary care clinicians who increasingly screen patients for cannabis use yet have limited guidance on how to counsel regarding driving safety or document concerns in ways that align with their state’s legal framework. The complexity is further confounded by individual variability in THC metabolism, tolerance development, and the poor correlation between blood THC levels and functional impairment. Until cle 💬 Join the Conversation Have a question about how this applies to your situation? [Ask Dr. Caplan →](https://benjamincaplan.com/ask-dr-caplan) Want to discuss this topic with other patients and caregivers? [Join the forum discussion →](https://cedclinic.com/interact/discussion-forums/) Have thoughts on this? Share it: [X Share on X](https://twitter.com/intent/tweet?text=Just%20read%20this%20on%20CEDclinic.com%3A%20Editorial%3A%20SC%20Legislature%20left%20DUI%20and%20THC%20bills%20for%20dead%3B%20DUI%20restrictions%20can%20be%20revived%20%40drcaplan&url=https%3A%2F%2Fcedclinic.com%2F%3Fp%3D68912)[in Share on LinkedIn](https://www.linkedin.com/sharing/share-offsite/?url=https%3A%2F%2Fcedclinic.com%2F%3Fp%3D68912)[🦅 Share on BlueSky](https://bsky.app/intent/compose?text=Just%20read%20this%3A%20Editorial%3A%20SC%20Legislature%20left%20DUI%20and%20THC%20bills%20for%20dead%3B%20DUI%20restrictions%20can%20be%20revived%20via%20%40drcaplan.bsky.social%20https%3A%2F%2Fcedclinic.com%2F%3Fp%3D68912)[📷 Follow on Instagram](https://www.instagram.com/drbenjamincaplan)[📝 Read more on Substack](https://doctorapprovedcannabis.substack.com/)[🔔 Subscribe via RSS](https://cedclinic.com/feed/) Related Articles - [CED Digest: 436 Items — March 14, 2026](https://cedclinic.com/cannabis-compounds-fatty-liver-disease-2026/) - [CED Digest: 405 Items — March 12, 2026](https://cedclinic.com/alabama-medical-cannabis-sales-2026-spring-launch/) - [CED Digest: 392 Items — March 11, 2026](https://cedclinic.com/cannabis-compounds-fatty-liver-disease-2026/) 📰 Source: [https://www.postandcourier.com/opinion/editorials/sc-thc-dui-loopholes-legislature/article_b4f94aeb-7ae4-499f-bcd9-52acd5120424.html](https://www.postandcourier.com/opinion/editorials/sc-thc-dui-loopholes-legislature/article_b4f94aeb-7ae4-499f-bcd9-52acd5120424.html) Further Reading CED Clinic Blog[Why Cannabis Works](https://cedclinic.com/why-cannabis-works/) Evidence Watch[Cannabis and Heart Health](https://cedclinic.com/cannabis-cardiovascular-health-study/) CED Clinic Blog[Cannabis for Sleep](https://cedclinic.com/cannabis-for-sleep/) [https://cedclinic.com/contact/](https://cedclinic.com/contact/) Physician-Led, Whole-Person Care A doctor who takes the time to truly understand you. Personal care that starts with listening and is guided by experience and ingenuity. Health, Longevity, Wellness One-on-One Cannabis Guidance Metabolic Balance [Leave a Message](https://cedclinic.com/contact/) [Metabolic Care](https://cedclinic.com/metabolic/metabolic-how-it-works/) [Medical Consulting](https://cedclinic.com/book/) [Cannabis Care](https://cedclinic.com/book/) [https://cedclinic.com/contact/](https://cedclinic.com/contact/) RELATED READING AT CED CLINIC Continue exploring the evidence [‘Little evidence’: The flaw in the state’s cannabis driving laws](https://cedclinic.com/little-evidence-the-flaw-in-the-states-cannabis-driving-laws/) An analysis of the gaps and challenges in cannabis driving laws affecting impairment assessments and legal outcomes. [Read More](https://cedclinic.com/little-evidence-the-flaw-in-the-states-cannabis-driving-laws/) [GOP Lawmaker Circulates Bill To Keep Hemp THC Drinks Federally Legal](https://cedclinic.com/gop-lawmaker-circulates-bill-to-keep-hemp-thc-drinks-federally-legal/) Insights into federal legislative efforts impacting [hemp-derived THC](https://cedclinic.com/hemp-derived-thc-products-regulation-patient-access/) products and regulatory implications. [Learn More](https://cedclinic.com/gop-lawmaker-circulates-bill-to-keep-hemp-thc-drinks-federally-legal/) [White House Drug Czar Clarifies That Marijuana Is ‘Still Illegal’ Following Trump …](https://cedclinic.com/white-house-drug-czar-clarifies-that-marijuana-is-still-illegal-following-trump/) Clarification on federal marijuana legality and its influence on state-level cannabis policies and enforcement. [Explore Details](https://cedclinic.com/white-house-drug-czar-clarifies-that-marijuana-is-still-illegal-following-trump/) ### Related --- ### Verification & Medical Governance - **Lead Clinical Author:** Benjamin Caplan, MD - **Credentials:** Board Certified in Family Medicine (ABFM), Former CMO Canna Care Docs (250,000+ patients supervised), Founder & CMO CED Clinic & CED Foundation, Author of *The Doctor-Approved Cannabis Handbook* (Penguin Random House). - **Clinical Scale:** 350,000+ lifetime evaluations overseen; 81,008-patient Real-World Evidence Registry (`~/.ced_rwe_vault.db`); 125,000+ peer-reviewed study literature observatory (`http://localhost:8768/api/explorer/terminal`). - **License Verification:** Commonwealth of Massachusetts License #240562 (https://checkahealthlicense.mass.gov/). - **NPI Registry:** 1962722637 (https://npiregistry.cms.hhs.gov/provider-view/1962722637). - **Ethics & Data Privacy:** Clinical registry observations adhere strictly to HIPAA Safe Harbor de-identification (45 CFR § 164.514(b)) and criteria for secondary research exemption under 45 CFR § 46.104(d)(4).