It’s been more than 20 years since the STA (Springfield Transit Authority) introduced its ill-fated monorail system, but even fictitious cities eventually need to upgrade their public transportation. Last Sunday’s Simpsons episode featured a  hitherto unseen transit network complete with multicolored Vignelli-like maps.

The extensive system covers all of Springfield’s hotspots and hipster neighborhoods like Little Ethiopia, Albino Heights and Queasy Street. You can even reach Shelbyville—but who’d want to go there?