Sorry. I didn’t mean it that way.
I just want to decrease generation of mail(1st class), so I made this patch.
Now, PAK128.Japan contain Green car(train or ship) and taxi(road) to transport 1st passenger.
But, that's capacity is less than mail transport vehicles of other paksets.(Of course, 2nd passenger capacity is as much as other paksets.)
It is the capacity of a real vehicles.
So, default generation of mail is very large for PAK128.Japan.
When I tried to transport 1st passenger to the station from the medium-size city by taxi, the road was filled by only taxies.
It indicate that 1st passenger of the big city can not be transported by taxies.
In trains, Green car capacity is little(except for Shinkansen and some commuter trains.) and must be connected to the many 2nd passenger car.
For example, 681 series can contain only one Green car(36 capacity), and must connect to at least two or more 2nd passenger car.
This is the current state of Japanese rail vehicles.
Oh, This patch can decrease mail of the map as a whole, but mail are very concentrated for attractions.
It needs more improvements...