Final answer:
Blocking an intersection is generally illegal, but there may be exceptions during heavy traffic.
Step-by-step explanation:
It is generally illegal to block an intersection. Blocking an intersection can obstruct the flow of traffic and is considered a traffic violation in most jurisdictions. However, there may be certain exceptions or circumstances where blocking an intersection is permitted, such as during heavy traffic or congestion. It is important to follow local traffic laws and regulations to determine the legality of blocking an intersection in a specific area.