In the game, in order to improve the character's combat effectiveness, you must understand the steps to solve the problem that the post office cannot deliver items in City Skylines 2. Only by solving this problem can the character become more powerful and have an easier time in battle. If you want to know the solution to this problem, then you might as well take a look at the guide brought by the editor.
1. High processing volume but low mail service availability will cause the post office to be unable to deliver trucks.
2. The mail squeeze problem in the building will also cause the post office to be unable to deliver trucks.
3. The inability to drive may also be due to the insufficient number of laborers, most of whom go to factories, and the demand for office areas cannot increase.
4. There may be a bug in the game that prevents it from running automatically.