Seoul has done something that I often hear people ask for, a simple citywide color scheme that helps make the structure of the bus system obvious. The four colors of bus correspond to four types of service:
- Blue buses run in reserved median busways on major arterials, and appear to be mostly radial (into and out of the urban core.)
- Green buses are feeders that tend to run locally within a particular area.
- Red buses are "express" to and from outer suburbs. It's not completely clear if this is peak commuter express or frequent all-day service (which I usually call "Rapid"). Express is a slippery word.
- Yellow buses are orbital lines, thus tend to be perpendicular to the blue and red ones.
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| A green Seoul bus, photo by sarahkim |
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