What should a driver do if emergency help has not arrived at an accident scene?

In the case of an accident where emergency help has not yet arrived, the best course of action is to ensure safety for all involved and for other road users. Blocking the road can protect the scene and prevent further accidents, signaling to other drivers to slow down or stop. By positioning a vehicle in such a way that it reduces the chances of additional collisions, a driver ensures that help can arrive safely and can also provide assistance if needed.

It's crucial to remain at the scene until help has arrived to provide necessary information to the authorities and to assist those in need if one is capable of doing so safely. Additionally, leaving the scene or moving the vehicle could potentially complicate an accident investigation or put others in danger. Therefore, blocking the road until help arrives serves multiple purposes: maintaining safety, preventing further accidents, and aiding the proper handling of the accident as emergency services arrive.