What is the ruling on a girl studying at a mixed-gender university while adhering to the Islamic controls, and is the fundamental principle that women should not be educated? What is the ruling on her riding alone in a taxi to go to the university, and is it better for her to drive her own car?

If studying at the university does not expose one to forbidden intermingling (ikhtilat) or unlawful private seclusion (khalwa), then there is no harm in it, as seeking beneficial knowledge is not prohibited for women. However, riding alone in a car with a driver is an unlawful private seclusion (khalwa), and likewise, riding in a mixed-gender bus next to a foreign man in close proximity is not permissible. A woman driving her own car is preferable to all of that, provided she observes the শরিয়াহ-compliant regulations.