


Where train_friction_force is the summed up friction of each wagon and locomotive (0.5 for any type of wagon including locomotives) and train_weight is the summed up weight of each wagon and locomotive, see their individual pages for the weight values.

Train_speed = train_speed × (1 - air_resistance_of_front_rolling_stock ÷ (train_weight ÷ 1000)) Train_speed = train_speed + (10 × number_of_locomotives_in_moving_direction × fuel_acceleration_bonus ÷ train_weight) Train_speed = max(0, abs(train_speed) - train_friction_force ÷ train_weight) The speed of an accelerating, fully fueled, train is calculated every tick by the game with the following formula: The maximum speed that a locomotive can get to depends on the train that it is pulling. The color of the locomotive can be customized. While locomotives can be assembled by hand, the engine unit for it require automated construction to build, so it cannot be built from raw materials by hand. Multiple locomotives can be used on a single train to increase its speed. Solid fuel, rocket fuel and nuclear fuel will give +20%, +80% and +150% acceleration respectively, and provide +5%, +15% and +15% for top speed respectively. Locomotives are burner devices and require fuel to run the more powerful the fuel used, the faster the locomotive's acceleration and top speed will be. Automatic trains can also use rail signals and rail chain signals to designate different or changing paths on a railway, as well as manage multiple trains on multiple or intertwining tracks. They can be set up to travel automatically between train stops, or be controlled manually, even if the player is in a cargo wagon attached to the train, rather than the controlling locomotive itself. Naturally they do not have the same freedom of movement, however, as they are confined to the track. Locomotives are also good vehicles for the player to reach fixed destinations, as they are considerably faster than the car or tank. Trains are useful for moving large amounts of items over large distances. The Locomotive is the engine for movement of trains over track.
