Millions of drivers will break little-known Highway Code rule every day this winter

Millions of drivers are being warned that they could be breaking a Highway Code rule every day in the coming months. The 'offence' is leaving your car idling, or keeping the engine running when you're not in the car.

This becomes more common as the weather gets colder and drivers want to warm up their cars before setting off. However, what might be less known is that drivers shouldn't leave the engine running if they're stationary for more than a few minutes, such as in gridlocked traffic or at slow-moving roundabouts, reports Birmingham Live.

According to the code, the correct action is to apply the handbrake and turn off the engine, even though this rarely happens in reality. It's acceptable to keep the engine running in frequently moving traffic.

Some councils have begun issuing fines to motorists who leave their engines running near schools due to concerns about emission-related health risks. The code advises drivers to "should apply the parking brake and turn off the engine if the vehicle is stationary for more than a couple of minutes".

Swansway Motor Group experts have highlighted a key point for drivers regarding engine idling: "Under Highway Code Rule 123, drivers must not leave a parked vehicle unattended with the engine running unless necessary, such as when waiting in traffic. This rule aims to reduce emissions and minimise health risks. The Road Traffic Act 1988 makes idling an offence, with fines for non-compliance. However, fines may soon increase as councils try to deter idling more effectively."

They further emphasised the importance of this issue, saying: "A higher penalty would remind drivers of the environmental and health risks associated with idling. As autumn settles in, we should all try to avoid idling as it directly impacts our air quality."

They also pointed out: "These emissions contribute directly to climate change and have immediate health consequences. While newer vehicles are designed to minimise emissions, it's always best to switch off your engine when it's unnecessary to keep it on."