No. Texas law generally prohibits leaving a vehicle unattended while running, with exceptions for remote-start systems and certain emergencies. Local ordinances in cities like Austin and Dallas impose stricter penalties, and 2026 state legislation expands enforcement under HB 1285, targeting idling violations near schools and residential zones.
Key Regulations for Leaving Your Car Running Unattended in Texas
- Texas Transportation Code § 545.404 bans leaving a vehicle unattended unless the engine is off, the key is removed, and the parking brake is engaged. Violations incur fines up to $200.
- Local Idling Ordinances: Austin’s Idling Reduction Ordinance (2023) mandates engine shutdown after 5 minutes in non-residential areas, with fines escalating to $2,000 for repeat offenses. Dallas enforces similar rules under City Code Chapter 10-8.
- HB 1285 (2026 Effective Date): Expands state-level enforcement, requiring law enforcement to issue citations for idling within 50 feet of schools or residential properties, aligning with federal EPA emissions standards.
Exceptions include using remote-start systems with the vehicle within 25 feet or when necessary for safety (e.g., defrosting windows in extreme cold). Commercial vehicles face additional scrutiny under Texas Commission on Environmental Quality (TCEQ) rules, which cap idling at 5 minutes for diesel trucks. Non-compliance risks liability for accidents caused by unattended vehicles, per Texas Civil Practice & Remedies Code § 100.001.