Drivers are urged to defrost windscreens carefully as a mistake could result in a fine. Car insurance experts warn that leaving the car engine on to defrost the windscreen could be illegal and lead to a penalty of up to £80. This is due to the UK's strict regulations on engine idling, which is prohibited on public roads. The law, Section 42 of the Road Traffic Act 1988, applies to stationary vehicles and aims to reduce emissions and noise pollution. However, it's important to note that this rule doesn't apply to private driveways or parking lots. The insurance experts also highlight the health risks associated with engine idling, as the fumes can cause lung and respiratory problems, especially near schools. The Highway Code's Rule 123 emphasizes the importance of turning off the engine when the vehicle is stationary for more than a couple of minutes. As the UK braces for Storm Goretti, drivers need to be prepared for potential snow and ice. The Met Office has issued weather warnings, and it's crucial to follow these guidelines to ensure safety and avoid legal consequences.