How fast is your bus? WMATA maps bus speeds
This would be cool for Baltimore as well. Greater Greater Washington has this recolored "thumbnail" that shows the bus speeds from green (fastest) through cyan to dark blue (slowest) because the original color choices were bad.
The sad bit for me is the average speed of the buses, which I'll redefine as walking, casual bike riding, intermediate bike riding and bike racing speeds. I believe that if alternate transportation was better thought out and supported, biking and walking could (mostly) take over having to have slow bus routes, leaving more buses to be faster and more of a competition for fast convenient travel.
Or stated a bit differently, if you are in decent shape getting around DC (and most likely Baltimore as well) is faster by bike then by bus, and I find that rather sad.