I have a railway and I want to have multiple carts on it. However, when I launch my carts together, the one behind jams when they come to a turn and doesn't continue. How can I make this so both carts will arrive at destination properly?
Quite simply: More spacing between your carts. Wait a little longer before firing off the second cart and the first will have cleared the corner before it gets there.
Also remember to take into account that occupied carts travel faster than unoccupied ones.