There's only two monorail operations in the USA outside of Disneyland Parks.
(1) Seattle which connects the northern edge of downtown Seattle to Seattle Center where the Space Needle stands
(2) Las Vegas which connects the casinos to its convention center.
In both cases, mainly tourists ride them.
There is a very handy monorail in Tokyo that carries about 300k people a day from Haneda Airport into Tokyo (extension to "downtown" Tokyo Station reportedly underway). 11 miles/11 stations with top speed of 50 mph. Of course, transit in Tokyo is beyond comparison with Fort Worth but monorail is definitely a viable transit mode.
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