Firstly, be clear of the goals! You win this game usually by satisfying about ten conditions at once. See Company Rating in Game Mechanics. Even if you are much much more richer than your competitors, you may still lose the game because your company only focuses on limited cargo types, or that you only run a few airports. That means your company isn't diversified enough.
Now that the goal is clear. The way to win this game is by fulfilling these goals and being careless about the cash. So, let's open up more stations, even intra-town stations. Let's carry more cargo types, even with just one little bus. Let's run more buses to fill the vehicle count requirement. Those are basically three most often overlooked winning conditions.
Okay, so here're the juicier tips:
- The most important point is: the longer the route, the more money you earn! Always favor longer routes than shorter ones. However, this must be balanced with opportunity cost, that is when your fleet is away, your competitors might be sucking dry the cargos.
- Airplanes earn the most, then trains and (oil) ships, and buses the least. So if you have about 200 thousand dollars, get yourself an airport as soon as possible. Favor the biggest airports (Intercontinental one) upfront because it will be very difficult to upgrade later on.
- Some cargo types are best transported with some vehicle types. For example, oil are best served by ships, valuables by buses, and passengers by airplanes. For example, a Dinger 200 airplane could fly 400 passengers off to another city in a jiffy. That one air plane could easily earn you half a million dollars in a year.
- It is best to favor the most abundant resource producers. If you want to get passengers, find big cities. If you want to get into woods carving, find the biggest forests. If you want to supply oil to refineries, find the richest oil rigs.
- Feeder service that transfers cargo from one station to another is very useful. Remember, that is a cargo transfer, not cargo drop off. Feeder service also helps keep the mines/farms/etc. producing resources. For example, let's suppose you have a train station nearby a coal mine and this train serves a remote power station. You can open one lorry (truck) station next to the mine, and another that is joint (either distant-joint or adjacent) with the train station. Then you run one bus to carry cargo from an unjoint lorry station to the joint lorry station. Pick up the coal at the former, and transfer it at the later. This is an extremely short feeder service.
+------+ +------+ road +--------+
| Mine | | Lor1 |--------| Lor1 + |
+------+ +------+ | Train |
- In a well-run system, waiting time is minimized. Do favor more reliable, and faster vehicles. Also, make sure to split your vehicles to different separate stations or different stations of one joint-station.
For example, if the buses are entering the station from one horizontal direction, you can split them into two branches by placing two vertical stations at different road segments at the junction, joining them into one joint station.
-->-->--+--> (bus direction)
The idea is to place the stations on different road segments so that the total distances (of the whole route) when passing through either one of these stations are roughly the same so that buses don't favor S1 over S2, or vice verse. And remember, after passing through a station that is a part of a joint station, buses will avoid another in that same joint station. In the same vein of minimizing waiting time, maximum speed is, of course, at high priority. Nevertheless, break downs can drag down even the fastest airplane. Those supersonic planes that carry limited passengers, at break down, fly at a mere 300km/h. Another note to remember is try to minimize sharp turns. Make them as wide as possible.
- If the previous points fail you, try this last resort tactic. This is a defensive move that you can use to secure access to important resources and block competitors from accessing them. You can purchase all the tiles within the vicinity of the mines. Then only you can build stations that supply those resources. And because roads are shared with all, you should use railways instead. Moreover, you can also purchase tiles surrounding the competitors' stations so that they cannot build roads connecting to them. This is dirty play at work!