What does a "no parking" sign signify?

A "no parking" sign signifies that parking is prohibited in that area at all times. This regulation is critical for maintaining traffic flow, ensuring safety, and allowing access for emergency vehicles, delivery trucks, and other necessary services. When drivers see a "no parking" sign, it serves as a clear directive that they cannot leave their vehicle in that spot, to prevent congestion or hazards that could stem from parked cars in prohibited areas.

The other options suggest situations where parking might be allowed under certain conditions. However, a "no parking" sign unequivocally states that no parking is permitted at any time, making the interpretation of option B accurate and aligned with traffic regulations.