IdlingFlanders
An introduction to the traffic rules and road signs of Flanders. Learn about driving, road safety and much more in our illustrated book, with answers to frequently asked questions.
For informational purposes only. Always follow official regulations. Some content and images were created with AI assistance.
90. Idling
Idling means allowing a vehicle's engine to continue running while the vehicle is stationary and the engine is not being used to move the vehicle. This may occur while waiting, parking, loading or unloading or before beginning a journey.
Unnecessary idling consumes fuel and produces exhaust emissions, air pollution and noise. Many countries or local authorities restrict prolonged or unnecessary idling, although exceptions may apply when the engine is required for safety, technical equipment or another necessary purpose.
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Is unnecessary idling allowed in Belgium?
No. Under the current Belgian Road Code, a driver may not leave the engine running in neutral unless this is necessary.
Must you switch off your engine every time you stop at a red light?
No general federal rule requires drivers to manually switch off their engine at every red traffic light. Being temporarily prevented from moving by traffic conditions is different from voluntarily leaving a vehicle stationary or parked.
Does Belgium set a nationwide maximum idling time in minutes?
No single federal time limit applies in the current Road Code. Instead, the rule prohibits leaving the engine running in neutral except where necessary. Regional or local rules may impose additional requirements.

Traffic rules
Flanders