Malta ruts weren't made by carts. The ones which are carved are water channels. Some are only one channel.
Pompeii ruts don't allow for horses. Two won't fit and one has to hurdle the pedestrian block. Chariots would not have had sufficient clearance over central blocks. Ruts hard up against walls would not allow for cart overhang.
Turkish ruts are the most bizarre. Definitely not carts.