Toggling back and forth
In part 1 and part 2, there are places where the Jones Falls Trail toggles back and forth across the street. In part 1, the JFT crosses the Fallsway back and forth. In part 2, the JFT toggles from one side of Falls Road to the other near the street car museum. Keeping, the trail on one side of the street makes for much better trail design.
The JFT would be better if it would stick to one side of the street instead of toggling back and forth. Crossings could have better signage and be better engineered.
Safer street crossings
The addition to the toggling back and forth, the JFT also passes through several intersections. JFT street crossings should be engineered for safety. Traffic calming and signage should be at every crossing. See this example from Europe.
Raised crossings and textured pavings slow traffic. Image from: Haibat