The two things you reference are very loosely related. I studied Transportation Engineering in the Civil department at UC Berkeley. I have always been very interested in public transportation. But I work as a Data Scientist in Silicon Valley rather than at one of the public transportation agencies. Because it pays roughly 10x as much. Every single one of the smartest people I went to school with is also now working in tech in Silicon Valley. A lot work on stuff like advertising optimization. Sigh.