The Atlanta area transit agency MARTA finally implemented its bus network redesign, called NextGen, on April 18, 2026. We led the network design and analysis tasks for the consulting team, and although it was a long and difficult journey, we’re proud of the results. Now that the new service is running, I want to give a quick overview of what the redesign did, and the new opportunities it creates. If you want to go deep into geographical detail, and understand why we made each routing choice, you can find our Final Report online here. Here’s the big picture. Old network on the left, new network on the right. Note the legend: Colors indicate all-day frequency. The wide grey lines on the basemap indicate the rail rapid transit network, which is all frequent most of the time. Our more detailed map of the new network is here.) The overall quantity of service we had to work with is slightly higher than in 2023 but lower than what existed in 2019. This reflected the available resources and…
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