Which of the following situations would be deemed as obstructing traffic?

The situation of parking beside a construction site can be deemed as obstructing traffic because construction sites often require the use of road space for materials, equipment, or work activities. If a vehicle is parked in a way that interferes with the normal flow of traffic, it can create hazards or delays, which is why this situation is considered an obstruction.

In contrast, parking in a designated emergency area is likely to be illegal due to the need for emergency access, but it's not necessarily obstructing traffic in the same direct way as parking beside a construction site would be. Parking appropriately in a designated parking spot doesn’t obstruct traffic as it allows vehicles to navigate the road safely. Similarly, parking on a taxicab stand may disrupt the availability of taxis but doesn’t impede the general flow of traffic as significantly as the option concerning the construction site. Thus, parking beside a construction site is most closely associated with obstruction of traffic due to its potential to interfere with work and the movement of vehicles on the road.