Drivers on supermarket parking lots are subject to traffic laws and can receive fines for violations, according to Nicolas Ferté, a Paris-based lawyer specializing in traffic law. Behaviors such as using a mobile phone while driving, failing to wear a seatbelt, running a stop sign, or driving against traffic are all considered infractions. These violations can result in fines of €90 if paid within 15 days or €135 within 45 days, categorized as Class 4 contraventions. Additionally, drivers risk losing points from their driving license, typically three points, with four points deducted for running a stop sign. Dangerous parking can also lead to a three-point deduction. The article emphasizes that parking lots are not private zones but areas with potential dangers due to vehicle and pedestrian traffic, and the Code de la route applies strictly.