Jarrett Walker Jarrett Walker is a consulting transit planner, helping to design transit networks and policies for a huge range of communities. He is the author of the Human Transit Blog. (humantransit.org). Recent Posts Midday Transit Demand Staying Relatively High During COVID By Jarrett Walker | May 29, 2020 | No Comments Covid-19 has understandably caused steep declines in public transit demand, but the pattern of that fall is important. Peak (rush hour) demand has fallen much more than all-day demand, mirroring a change in travel demand overall.