Because roads in Hereford are hilly and winding and they're some of the last cleared by state tow trucks in our region. The odds that a bus/parent get stuck on a slippery uphill are much greater than that in the city where they have designated snow routes that are taken care of pretty well.

Also routinely worse conditions north of the beltway than in the city. Baltimore area generally gets less snow, most of the pre-storm prep is focused there, and it's where the most amount of trucks are out clearing early.

Feels shitty, but really makes sense.