How much oversight do you have over your buses, while they're on the road? If one suddenly came to an unexpected stop or deviated from its route without warning, how long would it take you to know?
For too many districts, the answer would be "a long time." Without being able to directly track buses on their routes, they're left with little way of overseeing bus's progress aside from relying on radio reports. And if the bus driver is unable -or unwilling- to radio in, they're basically in the dark.