Glossary

Route

Collection of segments that leads from starting point to destination, or forms a loop with a destination the same as the starting point.

Segment

Collection of lines and nodes that has a shared set of characteristics such as Facility Type.

Facility Type

One of four classifications according to the page FacilityType.

Line

Connects two geographical points (each expressed in terms of Latitude and Longitude) with a straight line.

Node

A geographical point that one or more segments may share. It represents a possible or actual intersection.

Point

A latitude and longitude pair. The point also may have an elevation defined.

Facility

A route containing segments on only one Facility Type (or a single segment).