The term gridlock is also used to describe high traffic congestion with minimal flow (which is simply a traffic jam), where a blocked grid system is not involved. By extension, the term has been applied to situations in other fields where flow is stalled by excess demand, or in which competing interests prevent progress.
If there is a specific term, why continue to use the dated generic term that also means something else? A specific type of gridlock can also be blocking the box, it’s a generic term now.



Passport or just an id card work as well.