"Airspace" means the space extending vertically upward from a particular surface on the earth.
"Cross-sectional area" means the area of the resultant shape defined by cutting through something at a right angle to its axis.
"Encroach" means to advance beyond the specified area or space.
"Mailbox installation" or "installation" means the entire mailbox structure including the support, mailbox, hardware, and attachments.
"Mailbox support" or "support" means the part of the mailbox installation that holds up the mailbox, excluding hardware and auxiliary attachments.
"Neighborhood delivery and collection box units" means a cluster of several individual locked mailboxes packaged as a single unit.
"Pounds per foot" means the weight of a one-foot portion, measured vertically, of the mailbox support.
"Usable roadway" means the normally traveled vehicular lanes as well as the adjacent road surfaces that are used by motor vehicles, such as shoulders, turn lanes, and parking lanes.
MS s 169.072
19 SR 344
January 31, 2000