Under NYC regulation, when can a vehicle be immediately towed?

The correct answer is based on the regulations that govern towing practices in New York City, specifically focusing on parking violations. A vehicle can be immediately towed when it violates "No Parking" signs and certain conditions are met, such as the vehicle being unattended and in violation of the parking rules. This is an essential aspect of maintaining order on the streets of NYC and ensuring that vehicles do not obstruct traffic or create hazardous situations for other drivers.

For instance, in many scenarios, the presence of "No Parking" signs indicates that parking in that location is prohibited during specific times or altogether. If a vehicle is found in such a zone while unattended, it can be legally towed by authorized personnel. This serves not only to enforce parking regulations but also to keep the flow of traffic moving smoothly and safely.

The other options do not align with the regulations surrounding immediate towing as closely. Aging of a vehicle (older than 10 years) or a request from the owner does not directly warrant immediate towing under standard regulations. Similarly, while a vehicle blocking another vehicle can lead to towing, it is not the sole criterion. The focus on specific parking violations, particularly those outlined by signage, is central to when immediate towing is justified under NYC law.