No, Delaware law prohibits leaving a vehicle unattended with the engine running under 21 Del. C. § 4175, a statute enforced by the Delaware State Police and local municipalities. Violations carry fines up to $50 for first offenses, with escalating penalties for repeat infractions. The Delaware Department of Transportation (DelDOT) aligns with this statute to mitigate idling-related air quality violations under the Clean Air Act, particularly in New Castle County where ozone non-attainment persists.
Key Regulations for Leaving Your Car Running Unattended in Delaware
- 21 Del. C. § 4175: Explicitly bans leaving a motor vehicle unattended while the engine is running, with exceptions for remote starts (if the vehicle is within 10 feet and the operator remains present) or in emergencies.
- DelDOT Idling Restrictions: Commercial vehicles exceeding 10,000 lbs face stricter limits under DelDOT’s 2024 Idling Reduction Program, capping idling to 5 minutes unless engaged in loading/unloading.
- Local Ordinances: Wilmington and Newark enforce additional anti-idling rules, with fines up to $250 for repeat violations, as part of their 2026 Climate Action Plans targeting vehicle emissions.
Violations are typically documented by law enforcement or environmental inspectors, with penalties enforced through municipal courts. Exceptions exist for law enforcement, emergency vehicles, or vehicles in motion (e.g., drive-thrus). Failure to comply risks not only fines but also potential civil liability in accident scenarios where unattended idling contributes to negligence claims.