Maps and mongrels and metros, oh my! Researchers at an MIT lab have devised a way to determine how well commuters can comprehend a subway map—in a glance. (Fast Company, great article!)
Use our resources to better understand public transportation, and how to map it.
- Look through our GeoStory “Public Transportation,” which provides maps for buses, trains, and metros. (Maps are not included for ferries, another popular mass-transit option.) Which maps are your favorites? Which do you think were difficult to design?
- Maps for public transportation systems serving large urban areas are probably more difficult to design, because they must include numerous stops or stations, incorporate familiar landmarks, and be usable for both everyday commuters (who know the area) and tourists (who don’t). Sydney, London, Hong Kong, Santiago, and Tehran have huge public transportation systems.
- Maps for an older, well-established public transportation system are probably more difficult to design, because they must balance what commuters are familiar with and what is new and updated. London and Moscow metro systems are well-established and constantly updated.
- Watch our terrific media spotlight video, “Selecting a Map Projection.” In it, the cartographers at National Geographic explain that every map is a little bit (or a lot!) distorted, and how mapmakers must choose what features to prioritize when choosing a map or map projection. According to the video, why did Nat Geo cartographers use the “interrupted Mollwide” projection for their September 2012 map supplement—what features were prioritized? When would this map not be useful?
- Nat Geo cartographers used the interrupted Mollwide because it accurately compares area. The display of the ocean was prioritized in this map, so cartographers chose a projection centered on the Pacific. This projection shows all three oceans in their entirety, with the least distortion possible.
- An interrupted Mollwide projection would not be useful for navigation purposes, because angles and shapes are not prioritized. The Mercator projection, also shown in the video, preserves angles and meridians. This makes it more useful for oceangoing navigation.
- Thinking about how cartographers choose what to prioritize, then take another look at the public transportation maps in the GeoStory. What features are prioritized on these maps? How do mapmakers display these features?
- The basic shape of different routes or lines is displayed through bright colors.
- Stops or stations are displayed through oversize circles and bolded names.
- Stops where a route intersects with another (called transfer points or transfer stations) are specially marked.
- Relative orientation is prioritized over relative distance.
- Look at these cool, beautiful, and weird maps of the San Francisco Bay Area. What are cartographers choosing to prioritize in each of these?
- Any grad students out there? A comparison of MIT’s mongrel maps (described in the Fast Company article) and Micronesian stick charts has awesome dissertation written all over it.
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