When parking near a railway crossing, what is the minimum distance from the nearest track that a driver may park?

Answer: B — 30 metres

When parking near a railway crossing, the minimum distance a driver should keep from the nearest track is 30 metres. This is because trains require a certain amount of time and distance to come to a complete stop in case of an emergency. Parking too close to the tracks can also obstruct the view of the train driver and cause accidents. 50 metres (option A) may still be too close, while 15 metres (option C) and 5 metres (option D) are definitely too close and can be dangerous. It is important to always follow parking regulations and safety guidelines near railway crossings to ensure the safety of yourself and others.