Node:Service interval changes, Next:Station reset, Previous:Train non-stop command modifications, Up:Sign Cheats (detailed)
Cht: ServInt <days> [<types> [<ai>]]
With this cheat you can modify the service interval of all existing vehicles. It will be set to the given number of days.
If you specify a second number, it will determine what type of vehicle you want to change. It is a bit-coded number, with the bits meaning the following:
Simply add all the values for the types of vehicles that you want to modify.
If you specify a third number (and it is not zero), you can tell TTDPatch to modify the other players' vehicles as well.