Answer:
-comma splice
Explanation:
A comma splice occurs when two independent clauses are separated by a comma instead of semicolon, or by a comma and coordinating conjunction such as and, but, for or so.
In the sentence given, the independent clauses The conductor should come this way and he usually collects tickets before the end of each stop express complete thoughts and can stand on their own, so they should be separated by a semicolon, or by a comma and a coordinating conjunction like for:
The conductor should come this way; he usually collects tickets before the end of each stop.
The conductor should come this way, for he usually collects tickets before the end of each stop.
