Land use is the derivative of the transportation system

Something I've been mulling over:

Land use is the derivative of the transportation system. What I mean by this is that the nature of the land use system is wholly dependent on the local dominant transportation system. Hence a rail-oriented transportation system sees incredible centralization, pedestrian- and bike-oriented ones a dense spread, and automobile-oriented ones...sprawl.

Perhaps "derivative" isn't the right word in a technical sense, but it certainly sounds sexier than "dependent variable". And we want mantra here. We need mantra, because we need to focus on the problem at its core, because the reality is--there's a reason why planners are so often hamstrung, and it's because they're fighting a system dictated by the engineers. So while Euclidean planning standards don't help--parking requirements especially--the place to focus action would be with the engineers, to make it possible to engineer real streets, real platforms for value creation, again.

Repeat after me: Land use is the derivative of the transportation system. Land use is the derivative of the transportation system. Land use is the derivative of the transportation system.