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Glossary of Terms and Acronyms Access Ramp: A roadway that connects two or more thoroughfares Address Point: A GIS point that defines the location of a civic address Address Range: A set containing all address point numbers along each side of a road segment Attribute: A characteristic of a GIS feature Barrier: An obstruction built to control or prevent vehicle traffic Boarding Point: A geographic location of a place to board some form of trans- portation, such as a ferry Bulb: e rounded end of a cul-de-sac Bullnose: e physical end of a structure dividing a ramp from the roadway and often having a crash cushion Carriageway: One of the two sides of a road where traffic travels in one direction only, in one or more lanes Central Island: A built-up curb, possibly with vegetation, in the centre of a cul- de-sac's bulb Centreline: A line that runs along the centre of a carriageway Collector: A minor thoroughfare with property access which feeds traffic onto arterial roads Collection Corridor: A lane used to approach and exit a toll booth Cul-de-sac: A street with only the one and same inlet and outlet Dead End: A street with only one end connected to another street (cf. Cul-de- Sac) Digitization: e conversion of analogue source data to a digital representation End Point: e last coordinate in a line End of Road: e point at which vehicle traffic cannot proceed Exit Ramp: A roadway for to access or exit from a highway or freeway Expansion Joint: A mechanical connection point that holds two structures together while safely absorbing temperature-induced expansion and contraction of each of the structure's building materials Freeway: An unimpeded roadway that is high-speed, multi-lane—with four or more lanes—and is accessed only at an interchange From-To: An attribute that defines a road segment's beginning and end inter- secting road names Gap: An unintentional blank space between the end points of two different road segments of digital line features Grade: A feature's vertical location relative to ground level Grade Separated Road Crossing: e point where two or more roads cross each other at different elevations Community Road Network Guide to Best Practices v4.0 vi

• Cover
• 1 Overview
• 2 Data Standards
• 3 Road Features
• 3.1 Road Classification
• 3.1.1 Specialized Roads
• 3.1.2 Roundabouts
• 3.1.3 New Roads
• 3.2 Road and Centreline Representation
• 3.2.1 Grade Separated Road Crossings
• 3.2.2 Lanes Divided by Medians
• 3.2.3 Multi-Lane Intersections
• 3.2.4 Access and Exit Ramps
• 3.2.5 Cul-de-Sacs
• 3.2.6 Winter Roads and Ice Bridges
• 3.2.7 Minimum Size of a Road at Junctions
• 3.2.8 Roads Crossing Administrative Boundaries
• 3.3 Road Attributes
• 3.3.1 Address Range Assignment
• 3.3.2 Functional Road Classes
• 3.3.3 Number of Lanes
• 3.3.4 Surface Material
• 3.3.5 Route Number
• 3.3.6 Route Name
• 3.3.7 Exit Number
• 3.3.8 Road Level
• 3.3.9 Road Structure
• 4 Blocked Passage Features
• 5 Toll Point Features
• 6 Ferry Segment Features
• 7 Data Quality Checks for NG9-1-1
• 8 References
• Appendix A: Attribution
• A.1 Data Model Attributes
• A.2 Additional Attributes
• Appendix B: Feature Attribute Values (Domains)
• Appendix C: Attribute Data Specifications
• Figure 1 Road Segment Intersections
• Figure 2 Road Segment at End of Road (Dead End)
• Figure 3 Road Segment Crossing a Bridge
• Figure 4 Road Segments at Municipal Boundaries
• Figure 5 Road Segment Crossing a Railway
• Figure 6 Simple Roundabout at an intersection
• Figure 7 Named Roundabout
• Figure 8 Image of Complex Roundabout
• Figure 9 Two-way Road with Demarcated Traffic Lane
• Figure 10 Road without a Lane Marker
• Figure 11 Road with Parking Spaces along Sidewalk
• Figure 12 Road with Temporary Parking Lanes
• Figure 13 Road divided by a Median
• Figure 14 Centreline Separated by a Median
• Figure 15 Intersection with Right and Left Turning Lanes
• Figure 16 Freeway Interchange with Above Grade Crossings
• Figure 17 Access Ramp
• Figure 18 Street Name for Exit Ramps
• Figure 19 Cul-de-Sac without a Central Island
• Figure 20 Cul-de-Sac with a Central Island
• Figure 21 Minimum Size of a Road Element
• Figure 22 Intersection with an Offset Less than the Minimum Size
• Figure 23 Intersection with an Offset greater than the Minimum Size
• Figure 24 Address Range Assignment
• Figure 25 Address Range Assignment Split over a Median
• Figure 26 Cul-de-Sac with Even and Odd Address Range Assignment
• Figure 27 Cul-de-Sac with Address Range Following Main Road
• Figure 28 Relationship between Road Classes
• Figure 29 Bridge Road Structure
• Figure 30 Dam Road Structure
• Figure 31 Permanently Blocked Passage
• Figure 32 Blocked Passage with Removable Barrier
• Figure 33 Toll Point and Infrastructure
• Figure 34 Ferry Route between Two Boarding Points
• Figure 35 Multiple Ferry Routes from same Boarding Point
• Table 1 Road Segment Attributes
• Table 2 Additional NG9-1-1 Attributes
• Table 3 Ferry Connection Attributes
• Table 4 Toll Point Attributes
• Table 5 Blocked Passage Attributes
• Table 6 Street Type Prefixes and Suffixes
• Table 7 Directional Prefixes and Suffixes
• Table 8 Road Classifications
• Table 9 Closing Period
• Table 10 Traffic Direction
• Table 11 Digitizing Flag Direction (Left and Right)
• Table 12 Grade Level
• Table 13 Structure Type
• Table 14 Surface Material
• Table 15 Road Status
• Table 16 Toll Point Type
• Table 17 Blocked Passage Type
• Table 18 Country Left or Right
• Table 19 Province
• Table 20 Asset Responsibility
• Table 21 Acquisition Technique
• Table 22 Language Indigenous
• Table 23 Language