Final answer:
The 'blocking the box' law advises drivers not to enter an intersection unless they can clear it without stopping, preventing traffic congestion and reducing potential hazards.
Step-by-step explanation:
The "blocking the box" law is a traffic regulation that instructs road users not to enter an intersection unless there is sufficient space on the other side to clear the intersection without stopping. This means that even if the traffic signal is green, drivers should not proceed into the intersection if they will be unable to continue through to the other side, potentially blocking cross traffic when the signal changes.
By preventing vehicles from blocking the box, this law enables smoother traffic flow and reduces congestion and potential traffic hazards. While this law is a traffic control measure, it can be reflective of broader principles such as No Blocking rules, which in other contexts, like net neutrality, ensure unrestricted access to legal content or services.