A creature can pull a number of vehicle squares equal to the number of squares in the creature's space to a top speed equal to twice the creature's speed. It can accelerate its space in vehicle squares up to its speed. For instance, a single horse takes up 4 squares, and can pull a 4-square cart 100 feet each round with an acceleration of 50 feet.
Can you help me with the rules? Does carrying capacity works normally with animals that pull vehicle or that animal just can pull it without encumbrance till weight within reasonable limits and size fits vehicle size?
If carrying capacity works the same way as with characters, then vehicle weight counts in carrying capacity? Because I didnt find weight of veicle (For example - wagon).
Carrying Capacity is not part of the rules for pulling a wagon.
Carrying Capacity does not even have a category to cover 'pulling a wagon with wheels'.
It has: Light Load, Medium Load, Heavy Load, Lifting (over head), Lifting (off of ground and staggering around), and Push/Drag (object on the ground).
Pushing/Dragging does not cover pulling or pushing a vehicle with wheels on it.
In short, don't worry about strength when it comes to pushing/pulling a vehicle on it's wheels.
Moving a vehicle is more about overcoming inertia than it is constant brute force to keep it moving (barring things like mud in which case I would say to use the rules for Push/Drag because then it is not really driving is it?).
Pulled:A creature can pull a number of vehicle squares equal to the number of squares in the creature's space to a top speed equal to twice the creature's speed. It can accelerate its space in vehicle squares up to its speed. For instance, a single horse takes up 4 squares, and can pull a 4-square cart 100 feet each round with an acceleration of 50 feet.
Why medium or heavy wagon requare the same amount of creatures?
Propulsion muscle (pulled; 4 Medium creatures or 1 Large creature)
You are right, that appears to be a contradiction. It should take 6 squares of creatures to pull a medium wagon and 8 squares of creatures to pull a heavy wagon.