The title says my question exactly. Also if another mode of general transportation were invented for a landlocked city, what would it be? Below are the specific fantasy species that I am dealing with.
Note that these are not all of my species, but they are examples of all the different structures and heights represented among those species. All heights are in feet and inches.
The Vashnaag
They are winged humanoids. Basically they have wings connected their shoulder blades and tail feathers coming off their tailbone, and their structure is different and the second link give you a decent quick idea of what they look like. This is the stuff I've been going off of for their structure:
Bone structure / Modified bone structure / Muscle structure
I think they'll be an average height of 6'2" but if anyone has a reason for them to be shorter that they can back up with logic I would love to hear that argument.
Something you might ask about the vashnaag is why don't they just fly? Just like we don't want to walk everywhere they don't always want to fly everywhere.
(E.g. It might be raining and they don't want to get wet or zapped by lightning.)
Elves
A general category representing all the typical characteristics of elves and divided into subcategories based on average height of the various elf populations.
Tall Elves have and average height of 6'
Small Elves have and average height of 4'
Tiny Elves have and average height of 2' (these may not end up in my world)
Humans
Last I read our average height is 5'3.5" for women and 5'9" for men, so roughly 5'5" overall.
So Far...
I've come up with different seat types set up in different seating sections, which would work but would severely limit friend groups of multiple species sitting together.
Another option would be to have the subways and trains magically equipped so that each species could change a seat to a different prototype and then adjust the height to fit them specifically. This would definitely work, but I am interested in how an outcome could be accomplished without magic.
If there is any other information that I can provide I would be happy to do it.