To whom should you leave contact details when double parking?

Answer: D — On the windscreen of your vehicle

Leaving contact details on the windscreen of your vehicle is the best practice when double parking. This approach provides immediate information to other drivers and ensures that anyone needing to contact you about your vehicle can do so quickly. It demonstrates consideration for others on the road, allowing them to reach you if your vehicle is creating an obstruction. Displaying your contact information visibly reduces the chances of miscommunication or frustration among drivers, particularly in busy urban environments where double parking can significantly impede traffic flow. This option prioritizes both your responsibility as a driver and the safety of those around you. In contrast, leaving details with the police or nearest fire station would not provide immediate access in the case of an obstruction. Relying solely on notifying your supervisor may not be sufficient, as they might not be immediately aware of the situation. Therefore, the best course of action is to ensure that your contact information is directly accessible to anyone affected by your vehicle being double parked.