Say a bus takes 50 people. There are three lines in this scheme. So 150 people at once. If each route has a bus every 10 minutes, it would mean 900 per hour.

In order to move 5000 (about 10% of BMD's capacity) in two hours, you'd need a bus about every four minutes running on each route.

Which doesn't sound too bad until you calculate how many buses you would need in total. I don't know how long the routes are but if average is 20 minutes from start to BMD (plus loading and unloading) you'd need 10 buses on every line, so 30 in total (and they run empty half the time).

Sorry if I bored anyone I just got thinking what sort of amount of people those buses could conceivably move and thought someone else might be interested as well (or want to point out why I'm wrong).