Check out this new article Wizards of the Coast posted recently:

Making the Trains Run on Time

As a young boy, I was an avid model railroader, and I spent a lot of time doodling track plans. My dad advised me to make sure I included lots of sidings for switching and what he called “realistic operation.” And that way of thinking was what inspired me to design the Sword Coast the way it looks on the maps of the Realms.