IRT bicycles in relation to buses and trains, mass transit can be designed with bikes in mind. Dallas is not exactly known for having the best mass transit system around, but DART buses have easy to use bike racks on the front and the light rail trains have handicap accessible cars with flat loading platforms and hooks to hang your bike to keep it somewhat out of the way.

Your points on other forms of travel, such as regular cars + bicycles, are definitely true.

https://www.dart.org/riding/bikeracksonbuses.asp https://www.dart.org/riding/bikesontrains.asp