When a corridor diagram is created for a street which is an alias to another street, not all the crashes will be shown. The crashes included may also not include those that occured on end-point cross streets if they are aliases as well.
The diagram name indicates an intersection. The diagram type is not an intersection.
A very long street name exists in the database, but diagrams for locations on that street can not be generated, and sometimes the street itself is missing from high accident location lists.