Using San Francisco Muni’s NextBus API, I collected a day’s worth of data on the movements of light rail vehicles and made a Marey style diagram of their movements. Click on each image for a full-resolution version. ) This diagram style illustrates some daily grievances nicely. For example, bunching is shown by tightly spaced lines, and service gaps show up as long horizontal distances between adjacent lines. Both the J and the N must enter the Muni subway tunnel at the Duboce portal. Bec...
