The ability to track a single bus on the GPS locator map, there are too many busses that run at one time for the map to be usable. If it had a "only show favorites" or "saved" or a "single route" would be a vast improvement in tracking the bus or buses you specifically need.
Please enhance readability of stop icons on mobile devices (Android). It's nearly impossible to see an icon's directional arrow without zooming way in. This is especially important when opposing direction stops on the same street overlap. Increase both arrow size and color contrast. The web map is easy to read, but the Android version is tough.