there is a bus in every 10 mins. but most of the time, they run so late and then boom! 3 buses at the same time after 30 minutes of wait. i kid you not, this is way too normal. i hate the Glasgow First buses from the bottom of my heart. i am with you on this frustration. I now prefer to walk to work which is 45 minutes for me. at least i know i will be there on time.