"A computer-based calling system notifies parents along a route by phone or e-mail that a bus is running slow."
Can we get this guy from Danville, Illinois, Jeremy Roarke, to come work here? He seems to know what he's doing.
http://www.news-gazette.com/news/local/2015-01-06/fleet-maneuvers-keeping-school-buses-running-when-winter-hits.html