[DuncanWaring]

Each delivery address is part of a route a carrier covers in a given day. Half the routes would be M-W-F, half T-T-S.

[foreverfree]

Each delivery address is part of a route a carrier covers in a given day.

Duh.

Half the routes would be M-W-F, half T-T-S.

I imagine politics would be involved as to which half is assigned to which days.

ff