Question: We have with us in Morocco buses which have free-mixing between men and women, such that a man sits near a woman in the seating. And everyone crowds when exiting from the [bus]. Is riding on these buses allowed or not?
Answer: “If the Muslim, especially the student of knowledge, is able to find a means other than this means, then it is better. This is because a person is weak when looking at women. If he does not find this means and he is forced to ride it, then there is no harm even if women ride. However, he lowers his gaze and he does not sit next to a woman directly and it is upon him to give advice in accordance to the need”
Faisal Ibn Abdul Qaadir Ibn Hassan