It is indeed possible to have a city full of low-rise buildings that is still compact enough for excellent transit service—but only if most side streets are used for mid-rise buildings instead of houses.
Over 2,000 people died from hit-and-run collisions on American roads in 2016, the highest since 2009, claiming a disproportionate amount of pedestrian and cyclist lives. One solution: more protected bike lanes.
The Downtown Denver Partnership found 8.3% of all commuters bike to work—an improvement that the partnership's senior manager of economic development said could be "the most significant change we've ever seen."
Denver is in the process of rolling out a transportation experiment to the residents of the region: separating street space for transit and active transportation can serve all users and doesn't have to be the end of the world for drivers either.